Genetic genealogy

Genetic genealogy is the use of Genealogical DNA tests, i.e. DNA profiling and DNA testing in combination with traditional genealogical methods, to infer biological relationships between individuals. Genetic genealogy involves the use of genealogical DNA testing to determine the level and type of the genetic relationship between individuals. This application of genetics became to be used by family historians in the 21st century, as tests became affordable. The tests have been promoted by amateur groups, such as surname study groups, or regional genealogical groups, as well as research projects such as the Genographic Project.

As of 2019, about 30 million people had been tested. As this field has developed, the aims of practitioners broadened, with many seeking knowledge of their ancestry beyond the recent centuries for which traditional pedigrees can be constructed.

History

George Darwin, the first to estimate the frequency of first-cousin marriages

The investigation of surnames in genetics can be said to go back to George Darwin, a son of Charles Darwin and Charles' first cousin Emma Darwin. In 1875, George Darwin used surnames to estimate the frequency of first-cousin marriages and calculated the expected incidence of marriage between people of the same surname (isonymy). He arrived at a figure of 1.5% for cousin-marriage in the population of London, higher (3%-3.5%) among the upper classes and lower (2.25%) among the general rural population.[1]

Surname studies

One famous study examined the lineage of descendants of Thomas Jefferson’s paternal line and male lineage descendants of the freed slave, Sally Hemings.[2]

Bryan Sykes, a molecular biologist at Oxford University tested the new methodology in general surname research.[3] His study of the Sykes surname obtained results by looking at four STR markers on the male chromosome. It pointed the way to genetics becoming a valuable assistant in the service of genealogy and history.[4]

Direct to consumer DNA testing

The first company to provide direct-to-consumer genetic DNA testing was the now defunct GeneTree. However, it did not offer multi-generational genealogy tests. In fall 2001, GeneTree sold its assets to Salt Lake City-based Sorenson Molecular Genealogy Foundation (SMGF) which originated in 1999.[5] While in operation, SMGF provided free Y-Chromosome and mitochondrial DNA tests to thousands.[6] Later, GeneTree returned to genetic testing for genealogy in conjunction with the Sorenson parent company and eventually was part of the assets acquired in the Ancestry.com buyout of SMGF.[7]

In 2000, Family Tree DNA, founded by Bennett Greenspan and Max Blankfeld, was the first company dedicated to direct-to-consumer testing for genealogy research. They initially offered eleven marker Y-Chromosome STR tests and HVR1 mitochondrial DNA tests. They originally tested in partnership with the University of Arizona.[8][9][10][11][12]

In 2007, 23andMe was the first company to offer a saliva-based direct-to-consumer genetic testing.[13] It was also the first to implement using autosomal DNA for ancestry testing, which other major companies (e.g. Ancestry, Family Tree DNA and MyHeritage) also later implemented.[14][15]

By August 2019 it was reported that about 30 million people had had their DNA tested for genealogical purposes.[16][17] GEDmatch said about half of their profiles were American.[18][19]

The genetic genealogy revolution

The publication of The Seven Daughters of Eve by Sykes in 2001, which described the seven major haplogroups of European ancestors, helped push personal ancestry testing through DNA tests into wide public notice. With the growing availability and affordability of genealogical DNA testing, genetic genealogy as a field grew rapidly. By 2003, the field of DNA testing of surnames was declared officially to have “arrived” in an article by Jobling and Tyler-Smith in Nature Reviews Genetics.[20] The number of firms offering tests, and the number of consumers ordering them, rose dramatically.[21] In 2018, a paper in Science Magazine estimated that a DNA genealogy search on anybody of European descent would result in a third cousin or closer match 60% of the time.[22]

The Genographic Project

Main article: Genographic Project

The original Genographic Project was a five-year research study launched in 2005 by the National Geographic Society and IBM, in partnership with the University of Arizona and Family Tree DNA. Its goals were primarily anthropological. The project announced that by April 2010 it had sold more than 350,000 of its public participation testing kits, which test the general public for either twelve STR markers on the Y-Chromosome or mutations on the HVR1 region of the mtDNA.[23]

In 2007, annual sales of genetic genealogical tests for all companies, including the laboratories that support them, were estimated to be in the area of $60 million.[6]

The phase of the project in 2016 was Geno 2.0 Next Generation.[24] As of 2018, almost one-million participants in over 140 countries have joined the project.[25]

Typical customers and interest groups

Genetic genealogy has enabled groups of people to trace their ancestry even though they are not able to use conventional genealogical techniques. This may be because they do not know one or both of their birth parents or because conventional genealogical records have been lost, destroyed or never existed. These groups include adoptees, foundlings, Holocaust survivors, GI babies, child migrants, descendants of children from orphan trains and people with slave ancestry.[26][27]

The earliest test takers were customers most often those who started with a Y-Chromosome test to determine their father's paternal ancestry. These men often took part in surname projects. The first phase of the Genographic project brought new participants into genetic genealogy. Those who tested were as likely to be interested in direct maternal heritage as their paternal. The number of those taking mtDNA tests increased. The introduction of autosomal SNP tests based on microarray chip technology changed the demographics. Women were as likely as men to test themselves.

Citizen science and ISOGG

Further information: International Society of Genetic Genealogy and Y-chromosome haplogroup trees

Members of the growing genetic genealogy community have been credited with making useful contributions to knowledge in the field.[28]

One of the earliest interest groups to emerge was the International Society of Genetic Genealogy (ISOGG). Their stated goal is to promote DNA testing for genealogy.[29] Members advocate the use of genetics in genealogical research and the group facilitates networking among genetic genealogists.[30] Since 2006 ISOGG has maintained the regularly updated ISOGG Y-chromosome phylogenetic tree.[30][31] ISOGG aims to keep the tree as up-to-date as possible, incorporating new SNPs.[32] However, the tree has been described by academics as not completely academically verified, phylogenetic trees of Y chromosome haplogroups.[33]

Autosomal DNA 2007-present

In 2007, 23andMe was the first major company to begin offering a test of the autosome. This is the DNA excluding the Y-chromosomes and mitochondria. It is inherited from all ancestors in recent generations and so can be used to match with other testers who may be related. Later on, companies were also able to use this data to estimate how much of each ethnicity a customer has. FamilyTreeDNA entered this market in 2010, and AncestryDNA in 2012. Since then the number of DNA tests has expanded rapidly. By 2019, the combined totals of customers at the four largest companies was 26 million.[17][34][14][15] By 2018 autosomal testing had the dominant type of genealogical DNA test, and for many companies the only test they offered.[35]

Uses

Direct maternal lineages

Further information: Genealogical DNA Test - Mitochondrial DNA (mtDNA) testing

mtDNA testing involves sequencing at least part of the mitochondria. The mitochondria is inherited from mother to child, and so can reveal information about the direct maternal line. When two individuals have matching or near mitochondria, it can be inferred that they share a common maternal-line ancestor at some point in the recent past.

Direct paternal lineages

Further information: Genealogical DNA Test - Y-Chromosome DNA (Y-DNA) testing

Y-Chromosome DNA (Y-DNA) testing involves short tandem repeat (STR) and, sometimes, single nucleotide polymorphism (SNP) testing of the Y-Chromosome, which is present only in males and only reveals information on the strict-paternal line. As with the mitochondria, close matches with individuals indicate a recent common ancestor. Because surnames in many cultures are transmitted down the paternal line, this testing is often used by surname DNA projects.

Ancestral origins

Further information: Biogeographic ancestry and Population genetics

A common component of many autosomal tests is a prediction of biogeographical origin. A company offering the test uses computer algorithms and calculations to make a prediction of what percentage of an individual's DNA comes from particular ancestral groups. A typical number of populations is at least 20. Despite this aspect of the tests being heavily promoted and advertised, many genetic genealogists have warned consumers that the results may be inaccurate, and at best are only approximate.[36]

Modern DNA sequencing has identified various ancestral components in contemporary populations. A number of these genetic elements have West Eurasian origins. They include the following ancestral components, with their geographical hubs and main associated populations:

#	West Eurasian component	Geographical hub	Peak population	Notes
1	Ancestral North Indian	North India, Pakistan	North Indians, Pakistanis	Main West Eurasian component in the Indian subcontinent. Peaks among Indo-European-speaking caste populations in the northern areas, but also found at significant frequencies among some Dravidian-speaking caste groups. Associated with either the arrival of Indo-European speakers from West Asia or Central Asia between 3,000 and 4,000 years before present, or with the spread of agriculture and West Asian crops beginning around 8,000-9,000 ybp, or with migrations from West Asia in the pre-agricultural period. Contrasted with the indigenous Ancestral South Indian component, which peaks among the Onge Andamanese inhabiting the Andaman Islands.[37][38]
2	Arabian	Arabian peninsula	Yemenis, Saudis, Qataris, Bedouins	Main West Eurasian component in the Persian Gulf region. Most closely associated with local Arabic, Semitic-speaking populations.[39] Also found at significant frequencies in parts of the Levant, Egypt and Libya.[39][40]
3	Coptic	Nile Valley	Copts, Beja, Afro-Asiatic Ethiopians, Sudanese Arabs, Nubians	Main West Eurasian component in Northeast Africa.[41] Roughly equivalent with the Ethio-Somali component.[41][42] Peaks among Egyptian Copts in Sudan. Also found at high frequencies among other Afro-Asiatic (Hamito-Semitic) speakers in Ethiopia and Sudan, as well as among many Nubians. Associated with Ancient Egyptian ancestry, without the later Arabian influence present among modern Egyptians. Contrasted with the indigenous Nilo-Saharan component, which peaks among Nilo-Saharan- and Kordofanian-speaking populations inhabiting the southern part of the Nile Valley.[41]
4	Ethio-Somali	Horn of Africa	Somalis, Afars, Amhara, Oromos, Tigrinya	Main West Eurasian component in the Horn.[42] Roughly equivalent with the Coptic component.[41][42] Associated with the arrival of Afro-Asiatic speakers in the region during antiquity. Peaks among Cushitic- and Ethiopian Semitic-speaking populations in the northern areas. Diverged from the Maghrebi component around 23,000 ybp, and from the Arabian component about 25,000 ybp. Contrasted with the indigenous Omotic component, which peaks among the Omotic-speaking Ari ironworkers inhabiting southern Ethiopia.[42]
5	European	Europe	Europeans	Main West Eurasian component in Europe. Also found at significant frequencies in adjacent geographical areas outside of the continent, in Anatolia, the Caucasus, the Iranian plateau, and parts of the Levant.[39]
6	Levantine	Near East, Caucasus	Druze, Lebanese, Cypriots, Syrians, Jordanians, Palestinians, Armenians, Georgians, Sephardic Jews, Ashkenazi Jews, Iranians, Turks, Sardinians, Adygei	Main West Eurasian component in the Near East and Caucasus. Peaks among Druze populations in the Levant. Found amongst local Afro-Asiatic, Indo-European, Caucasus and Turkish speakers alike. Diverged from the European component around 9,100-15,900 ybp, and from the Arabian component about 15,500-23,700 ypb. Also found at significant frequencies in Southern Europe as well as parts of the Arabian peninsula.[39]
7	Maghrebi	Northwest Africa	Berbers, Maghrebis, Sahrawis, Tuareg	Main West Eurasian component in the Maghreb. Peaks among the Berber (non-Arabized) populations in the region.[40] Diverged from the Ethio-Somali/Coptic, Arabian, Levantine and European components prior to the Holocene.[40][42]

Human migration

Main article: Human migration

Genealogical DNA testing methods have been used on a longer time scale to trace human migratory patterns. For example, they determined when the first humans came to North America and what path they followed.

For several years, researchers and laboratories from around the world sampled indigenous populations from around the globe in an effort to map historical human migration patterns. The National Geographic Society's Genographic Project aims to map historical human migration patterns by collecting and analyzing DNA samples from over 100,000 people across five continents. The DNA Clans Genetic Ancestry Analysis measures a person's precise genetic connections to indigenous ethnic groups from around the world.[43]

Law enforcement

Further information: List of suspected perpetrators of crimes identified with GEDmatch

Law enforcement may use genetic genealogy to track down perpetrators of violent crimes such as murder or sexual assault and they may also use it to identify deceased individuals. Initially genetic genealogy sites GEDmatch and Family Tree DNA allowed their databases to be used by law enforcement and DNA technology companies such as Parabon NanoLabs and Full Genomes Corporation [44][45][46][47][48][49][50](see DNA Doe Project) to do DNA testing for violent criminal cases and genetic genealogy research at the request of law enforcement. This investigative, or forensic, genetic genealogy technique became popular after the arrest of the alleged Golden State Killer in 2018,[51] but has received significant backlash from privacy experts.[52][53] However, in May 2019 GEDmatch made their privacy rules more restrictive reducing the incentive for law enforcement agencies to use their site.[54][55] Other sites such as Ancestry.com and 23andMe have data policies that say that they would not allow their customer data to be used for crime solving without a warrant from law enforcement as they believed it violated users' privacy.[56]

See also

Main article: List of genetic genealogy topics

• Allele
• Allele frequency
• Citizen science
• Electropherogram
• Family name
• Forensic genealogy
• Genealogical DNA test
• Genealogy
• Genetic recombination
• Haplogroup
• Haplotype
• Human mitochondrial DNA haplogroups
• Human Y-chromosome DNA haplogroups
• Human mitochondrial genetics
• Human genetic clustering
• Most recent common ancestor
• Short tandem repeat (STR)
• Single nucleotide polymorphism (SNP)
• Y-STR (Y-chromosome short tandem repeat)
• Y-chromosome haplogroups in populations of the world
• Non-paternity event

References

1. Darwin, George H. (Sep 1875). "Note on the Marriages of First Cousins". Journal of the Statistical Society of London. 38 (3): 344–348. doi:10.2307/2338771. JSTOR 2338771.
2. Slavery at Jefferson's Monticello: The Paradox of Liberty, 27 January 2012 – 14 October 2012, Smithsonian Institution, accessed 23 March 2012. Quote: "The [DNA test results show a genetic link between the Jefferson and Hemings descendants: A man with the Jefferson Y chromosome fathered Eston Hemings (born 1808). While there were other adult males with the Jefferson Y chromosome living in Virginia at that time, most historians now believe that the documentary and genetic evidence, considered together, strongly support the conclusion that [Thomas] Jefferson was the father of Sally Hemings's children."
3. Kennett, Debbie (2018-03-14). "Farewell to Oxford Ancestors". Cruwys news. Retrieved 2018-05-21.
4. Sykes, Bryan; Irven, Catherine (2000). "Surnames and the Y Chromosome". The American Journal of Human Genetics. 66 (4): 1417–1419. doi:10.1086/302850. PMC 1288207. PMID 10739766.
5. "CMMG alum launches multi-million dollar genetic testing company - Alum notes" (PDF). 17 (2). Wayne State University, School of Medicine's alumni journal. Spring 2006: 1. Archived from the original (PDF) on 9 August 2017. Retrieved 24 Jan 2013. Cite journal requires |journal= (help)
6. "How Big Is the Genetic Genealogy Market?". The Genetic Genealogist. 2007-11-06. Retrieved 19 Feb 2009.
7. "Ancestry.com Launches new AncestryDNA Service: The Next Generation of DNA Science Poised to Enrich Family History Research" (Press release). Archived from the original on 26 May 2013. Retrieved 1 July 2013.
8. Belli, Anne (January 18, 2005). "Moneymakers: Bennett Greenspan". Houston Chronicle. Retrieved June 14, 2013. Years of researching his family tree through records and documents revealed roots in Argentina, but he ran out of leads looking for his maternal great-grandfather. After hearing about new genetic testing at the University of Arizona, he persuaded a scientist there to test DNA samples from a known cousin in California and a suspected distant cousin in Buenos Aires. It was a match. But the real find was the idea for Family Tree DNA, which the former film salesman launched in early 2000 to provide the same kind of service for others searching for their ancestors.
9. "National Genealogical Society Quarterly". 93 (1–4). National Genealogical Society. 2005: 248. Businessman Bennett Greenspan hoped that the approach used in the Jefferson and Cohen research would help family historians. After reaching a brick wall on his mother's surname, Nitz, he discovered and Argentine researching the same surname. Greenspan enlisted the help of a male Nitz cousin. A scientist involved in the original Cohen investigation tested the Argentine's and Greenspan's cousin's Y chromosomes. Their haplotypes matched perfectly. Cite journal requires |journal= (help)
10. Lomax, John Nova (April 14, 2005). "Who's Your Daddy?". Houston Press. Retrieved June 14, 2013. A real estate developer and entrepreneur, Greenspan has been interested in genealogy since his preteen days.
11. Dardashti, Schelly Talalay (March 30, 2008). "When oral history meets genetics". The Jerusalem Post. Retrieved June 14, 2013. Greenspan, born and raised in Omaha, Nebraska, has been interested in genealogy from a very young age; he drew his first family tree at age 11.
12. Bradford, Nicole (24 Feb 2008). "Riding the 'genetic revolution'". Houston Business Journal. Retrieved 19 June 2013.
13. Hamilton, Anita (October 29, 2008). "Best Inventions of 2008". Time. Retrieved April 5, 2012.
14. "About Us". 23andMe.
15. Janzen, Tim; et al. "Family Tree DNA Learning Center". Autosomal DNA testing comparison chart. International Society of Genetic Genealogy Wiki. Gene by Gene.
16. Farr, Christina (2019-08-25). "Consumer DNA testing has hit a lull — here's how it could capture the next wave of users". CNBC. Retrieved 2019-12-01.
17. Regalado, Antonio (2019-02-11). "More than 26 million people have taken an at-home ancestry test". MIT Technology Review. Retrieved 2019-04-16.
18. Michaeli, Yarden (2018-11-16). "To Solve Cold Cases, All It Takes Is Crime Scene DNA, a Genealogy Site and High-speed Internet". Haaretz. Retrieved 2018-11-21.
19. Regalado, Antonio (2018-02-12). "2017 was the year consumer DNA testing blew up". MIT Technology Review. Retrieved 2018-02-20.
20. Jobling, Mark A.; Tyler-Smith, Chris (2003). "The human Y chromosome: An evolutionary marker comes of age". Nature Reviews Genetics. 4 (8): 598–612. doi:10.1038/nrg1124. PMID 12897772.
21. Deboeck, Guido. "Genetic Genealogy Becomes Mainstream". BellaOnline. Retrieved 19 Feb 2009.
22. Erlich, Yaniv; Shor, Tal; Pe’er, Itsik; Carmi, Shai (2018-11-09). "Identity inference of genomic data using long-range familial searches". Science. 362 (6415): 690–694. Bibcode:2018Sci...362..690E. doi:10.1126/science.aau4832. ISSN 0036-8075. PMID 30309907.
23. "The Genographic Project: A Landmark Study of the Human Journey". National Geographic. Archived from the original on 2009-02-06. Retrieved 19 Feb 2009.
24. "About the Genographic Project - National Geographic". Genographic Project.
25. "National Geographic Geno DNA Ancestry Kit | Human Migration, Population Genetics". Genographic Project.
26. How African Americans Use DNA Testing to Connect With Their Past
27. Utilizing DNA testing to break through adoption roadblocks
28. Redmonds, George; King, Turi; Hey, David (2011). Surnames, DNA, and Family History. Oxford: Oxford University Press. p. 196. ISBN 9780199582648. The growth of interest in genetic genealogy has inspired a group of individuals outside the academic area who are passionate about the subject and who have an impressive grasp of the research issues. Two focal points for this group are the International Society of Genetic Genealogy and the Journal of Genetic Genealogy. The ISOGG is a non-profit, non-commercial organization that provides resources and maintains one of the most up-to-date, if not completely academically verified, phylogenetic trees of Y chromosome haplogroups.
29. "The International Society of Genetic Genealogy". Retrieved July 1, 2013.
30. King, TE; Jobling, MA (2009). "What's in a name? Y chromosomes, surnames and the genetic genealogy revolution". Trends in Genetics. 25 (8): 351–360. doi:10.1016/j.tig.2009.06.003. hdl:2381/8106. PMID 19665817.
31. International Society of Genetic Genealogy (2006). "Y-DNA Haplogroup Tree 2006, Version: 1.24, Date: 7 June 2007". Retrieved 1 July 2013.
32. Athey, Whit (2008). "Editor's Corner: A New Y-Chromosome Phylogenetic Tree" (PDF). Journal of Genetic Genealogy. 4 (1): i–ii. Retrieved July 8, 2013. Meanwhile, new SNPs are being announced or published almost every month. ISOGG’s role will be to maintain a tree that is as up-to-date as possible, allowing us to see where each new SNP fits in.
33. Larmuseau, Maarten (November 14, 2014). "Towards a consensus Y-chromosomal phylogeny and Y-SNP set in forensics in the next-generation sequencing era". Forensic Science International: Genetics. 15: 39–42. doi:10.1016/j.fsigen.2014.11.012. PMID 25488610.
34. "Continued Commitment to Customer Privacy and Control". Ancestry Blog. November 2, 2017.
35. Southard, Diahan (2018-04-25). "The Top 5 Autosomal DNA Tests of 2018". Family Tree. Retrieved 2019-01-18.
36. Estes, Roberta (February 10, 2016). "Ethnicity Testing — A Conundrum". DNAeXplained – Genetic Genealogy.
37. Priya Moorjani; Kumarasamy Thangaraj; Nick Patterson; Mark Lipson; Po-Ru Loh; Periyasamy Govindaraj; Bonnie Berger; David Reich; Lalji Singh (5 September 2013). "Genetic Evidence for Recent Population Mixture in India". American Journal of Human Genetics. 93 (3): 422–438. doi:10.1016/j.ajhg.2013.07.006. PMC 3769933. PMID 23932107.
38. Rakesh Tamang; Lalji Singh; Kumarasamy Thangaraj (November 2012). "Complex genetic origin of Indian populations and its implications" (PDF). Journal of Biosciences. 37 (5): 911–919. doi:10.1007/s12038-012-9256-9. PMID 23107926. Retrieved 17 May 2015.
39. Marc Haber; Dominique Gauguier; Sonia Youhanna; Nick Patterson; Priya Moorjani; Laura R. Botigué; Daniel E. Platt; Elizabeth Matisoo-Smith; David F. Soria-Hernanz; R. Spencer Wells; Jaume Bertranpetit; Chris Tyler-Smith; David Comas; Pierre A. Zalloua (February 28, 2013). "Genome-Wide Diversity in the Levant Reveals Recent Structuring by Culture". PLOS Genetics. 9 (2): e1003316. doi:10.1371/journal.pgen.1003316. PMC 3585000. PMID 23468648.
40. Brenna M. Henn; Laura R. Botigué; Simon Gravel; Wei Wang; Abra Brisbin; Jake K. Byrnes; Karima Fadhlaoui-Zid; Pierre A. Zalloua; Andres Moreno-Estrada; Jaume Bertranpetit; Carlos D. Bustamante; David Comas (January 12, 2012). "Genomic Ancestry of North Africans Supports Back-to-Africa Migrations". PLOS Genetics. 8 (1): e1002397. doi:10.1371/journal.pgen.1002397. PMC 3257290. PMID 22253600.
41. Begoña Dobon; Hisham Y. Hassan; Hafid Laayouni; Pierre Luisi; Isis Ricaño-Ponce; Alexandra Zhernakova; Cisca Wijmenga; Hanan Tahir; David Comas; Mihai G. Netea; Jaume Bertranpetit (28 May 2015). "The genetics of East African populations: a Nilo-Saharan component in the African genetic landscape". Scientific Reports. 5: 9996. Bibcode:2015NatSR...5E9996D. doi:10.1038/srep09996. PMC 4446898. PMID 26017457. Retrieved 13 June 2015.
42. Jason A. Hodgson; Connie J. Mulligan; Ali Al-Meeri; Ryan L. Raaum (June 12, 2014). "Early Back-to-Africa Migration into the Horn of Africa". PLOS Genetics. 10 (6): e1004393. doi:10.1371/journal.pgen.1004393. PMC 4055572. PMID 24921250.; "Supplementary Text S1: Affinities of the Ethio-Somali ancestry component". doi:10.1371/journal.pgen.1004393.s017. Cite journal requires |journal= (help)
43. "DNA Clans (Y-Clan) - DNA Ancestry Analysis". Genebase. Archived from the original on 2009-02-03. Retrieved 19 Feb 2009.
44. "Press Release for Buckskin Girl". 2018-04-11.
45. https://vb6ykw2twb15uf9341ls5n11-wpengine.netdna-ssl.com/wp-content/uploads/2019/07/6.-DNA-Doe-Project-ISHI-2019-Slides-v8-9-pm-Sunday-Evening.pdf
46. "The brave new world of genetic genealogy".
47. "Body found in 1995 tentatively identified".
48. "Internal Server Error".
49. Seth Augenstein (16 April 2018). "'Buck Skin Girl' Case Break Is Success of New DNA Doe Project". Forensic Magazine.
50. True Crime Queen. "Press Conference Regarding Joseph Newton Chandler III". Retrieved 6 February 2019 – via YouTube.
51. Molteni, Megan (24 April 2019). "What the Golden State Killer tells us about Forensic Genetics". Wired. Archived from the original on 25 April 2019. Retrieved 25 April 2019.
52. Zabel, Joseph (2019-05-22). "The Killer Inside Us: Law, Ethics, and the Forensic Use of Family Genetics". Berkeley Journal of Criminal Law. SSRN 3368705.
53. Curtis, Caitlin; Hereward, James; Mangelsdorf, Marie; Hussey, Karen; Devereux, John (December 2018). "Protecting trust in medical genetics in the new era of forensics". Genetics in Medicine. 21 (7): 1483–1485. doi:10.1038/s41436-018-0396-7. PMC 6752261. PMID 30559376.
54. Augenstein, Seth (2019-05-20). "GEDmatch Changes Are 'Blow' to Law Enforcement – and Forensic Genealogy". Forensic Magazine. Retrieved 2019-05-24.
55. Augenstein, Seth (2019-05-23). "Forensic Genealogy: Where Does Cold-Case Breakthrough Technique Go After GEDmatch Announcement?". Forensic Magazine. Retrieved 2019-05-24.
56. Pauly, Madison (12 March 2019). "Police Are Increasingly Taking Advantage of Home DNA Tests. There Aren't Any Regulations to Stop It". Mother Jones. Archived from the original on 31 March 2019. Retrieved 26 April 2019.

Further reading

Books

• Carmichael, Terrence; Alexander Ivanof Kuklin; Ed Grotjan (2000). How to DNA Test Our Family Relationships. Mountain View, CA: AceN Press. ISBN 978-0-9664027-1-1. Early book on adoptions, paternity and other relationship testing. Carmichael is a founder of GeneTree.
• Cavalli-Sforza, Luigi Luca; Paolo Menozzi; Alberto Piazza (1994). The History and Geography of Human Genes. Princeton, N.J.: Princeton University Press. ISBN 978-0-691-08750-4.
• Cavalli-Sforza, Luigi L.; Cavalli-Sforza, Francesco; Mimnaugh, Heather; Parker, Lynn (1996). The Great Human Diasporas : The History of Diversity and Evolution. Reading, MA: Addison-Wesley. ISBN 978-0-201-44231-1.
• Fitzpatrick, Colleen; Andrew Yeiser (2005). DNA and Genealogy. Fountain Valley, CA: Rice Book Press. ISBN 978-0-9767160-1-3.
• Gamble, Clive (1996). Timewalkers : The Prehistory of Global Colonization. Cambridge, MA: Harvard University Press. ISBN 978-0-674-89203-3.
• Jobling, Mark; Matthew Hurles; Chris Tyler-Smith (2003). Human Evolutionary Genetics : Origins, Peoples and Disease. New York, NY: Garland Science. ISBN 978-0-8153-4185-7.
• Olson, Steve (2003). Mapping Human History : Genes, Race, and Our Common Origins. Boston, MA: Houghton Mifflin. ISBN 978-0-618-35210-4. Survey of major populations.
• Oppenheimer, Stephen (2003). The Real Eve : Modern Man's Journey Out of Africa. New York, NY: Carroll & Graf. ISBN 978-0-7867-1192-5.
• Smolenyak, Megan; Ann Turner (2004). Trace Your Roots with DNA : Using Genetic Tests to Explore Your Family Tree. Emmaus, PA; Rodale, NY: Distributed to the trade by Holtzbrinck Publishers. ISBN 978-1-59486-006-5. Out of date but still worth reading.
• Pomery, Chris; Steve Jones (2004). DNA and Family History : How Genetic Testing Can Advance Your Genealogical Research. Toronto, Ontario, Canada: Dundurn Group. ISBN 978-1-5500-2536-1. Early guide for do-it-yourself genealogists.
• Pomery, Chris (2007). Family History in the Genes : Trace Your DNA and Grow Your Family Tree. Kew, UK: National Archives. ISBN 978-1-905615-12-4.
• Shawker, Thomas H. (2004). Unlocking Your Genetic History : A Step-by-Step Guide to Discovering Your Family's Medical and Genetic Heritage. Nashville, TN: Rutledge Hill Press. ISBN 978-1-4016-0144-7. Guide to the subject of family medical history and genetic diseases.
• Sykes, Bryan (2002). The Seven Daughters of Eve : The Science That Reveals Our Genetic Ancestry. New York, NY: Norton. ISBN 978-0-393-32314-6. Names the founders of Europe’s major female haplogroups Helena, Jasmine, Katrine, Tara, Velda, Xenia, and Ursula.
• Sykes, Bryan (2004). Adam's Curse : A Future Without Men. New York, NY: W.W. Norton. ISBN 978-0-393-05896-3.
• Tagliaferro, Linda; Mark Vincent Bloom (1999). Complete Idiot's Guide to Decoding Your Genes. New York, NY: Alpha Books. ISBN 978-0-02-863586-6.
• Wells, Spencer (2004). The Journey of Man : A Genetic Odyssey. New York, NY: Random House Trade Paperbacks. ISBN 978-0-8129-7146-0.

Documentaries

Jennifer Beamish (producer); Clive Maltby (director); Spencer Wells (host) (2003). The Journey of Man (DVD). Alexandria, VA: PBS Home Video. ASIN B0000AYL48. ISBN 978-0-7936-9625-3. OCLC 924430061.

Journals

• Decker, A.E.; Kline, M.C.; Vallone, P.M.; Butler, J.M. (2007). "The impact of additional Y-STR loci on resolving common haplotypes and closely related individuals". Forensic Science International: Genetics. 1 (2): 215–217. doi:10.1016/j.fsigen.2007.01.012. PMID 19083761.
• Dula, Annette; Royal, Charmaine; Secundy, Marian Gray; Miles, Steven (2003). "The Ethical and Social Implications of Exploring African American Genealogies". Developing World Bioethics. 3 (2): 133–41. doi:10.1046/j.1471-8731.2003.00069.x. PMID 14768645.
• Elhaik, E.; Greenspan, E.; Staats, S.; Krahn, T.; Tyler-Smith, C.; Xue, Y.; Tofanelli, S.; Francalacci, P.; Cucca, F. (2013). "The GenoChip: A New Tool for Genetic Anthropology". Genome Biology and Evolution. 5 (5): 1021–31. doi:10.1093/gbe/evt066. PMC 3673633. PMID 23666864.
• El-Haj, Nadia ABU (2007). "Rethinking genetic genealogy: A response to Stephan Palmi". American Ethnologist. 34 (2): 223–226. doi:10.1525/ae.2007.34.2.223.
• Fujimura, J. H.; Rajagopalan, R. (2010). "Different differences: The use of 'genetic ancestry' versus race in biomedical human genetic research". Social Studies of Science. 41 (1): 5–30. doi:10.1177/0306312710379170. PMC 3124377. PMID 21553638.
• Golubovsky, M. (2008). "Unexplained infertility in Charles Darwin's family: Genetic aspect". Human Reproduction. 23 (5): 1237–8. doi:10.1093/humrep/den052. PMID 18353904.
• Gymrek, M.; McGuire, A. L.; Golan, D.; Halperin, E.; Erlich, Y. (2013). "Identifying Personal Genomes by Surname Inference". Science. 339 (6117): 321–4. Bibcode:2013Sci...339..321G. doi:10.1126/science.1229566. PMID 23329047. S2CID 3473659.
• Larmuseau, M.H.D.; Van Geystelen, A.; Van Oven, M.; Decorte, R. (2013). "Genetic genealogy comes of age: Perspectives on the use of deep-rooted pedigrees in human population genetics". American Journal of Physical Anthropology. 150 (4): 505–11. doi:10.1002/ajpa.22233. PMID 23440589.
• Larmuseau, M H D; Vanoverbeke, J; Gielis, G; Vanderheyden, N; Larmuseau, H F M; Decorte, R (2012). "In the name of the migrant father—Analysis of surname origins identifies genetic admixture events undetectable from genealogical records". Heredity. 109 (2): 90–5. doi:10.1038/hdy.2012.17. PMC 3400745. PMID 22511074.
• McEwen, Jean E.; Boyer, Joy T.; Sun, Kathie Y. (2013). "Evolving approaches to the ethical management of genomic data". Trends in Genetics. 29 (6): 375–82. doi:10.1016/j.tig.2013.02.001. PMC 3665610. PMID 23453621.
• Moore, CeCe (2016). "The History of Genetic Genealogy and Unknown Parentage Research: An Insider's View". Journal of Genetic Genealogy. 8 (1): 35–37.
• Nash, Catherine (2004). "Genetic kinship". Cultural Studies. 18: 1–33. doi:10.1080/0950238042000181593.
• Nelson, A. (2008). "Bio Science: Genetic Genealogy Testing and the Pursuit of African Ancestry". Social Studies of Science. 38 (5): 759–83. doi:10.1177/0306312708091929. PMID 19227820. S2CID 7654852.
• Royal, Charmaine D.; Novembre, John; Fullerton, Stephanie M.; Goldstein, David B.; Long, Jeffrey C.; Bamshad, Michael J.; Clark, Andrew G. (2010). "Inferring Genetic Ancestry: Opportunities, Challenges, and Implications". The American Journal of Human Genetics. 86 (5): 661–673. doi:10.1016/j.ajhg.2010.03.011. PMC 2869013. PMID 20466090.
• Sims, Lynn M.; Garvey, Dennis; Ballantyne, Jack (2009). Batzer, Mark A (ed.). "Improved Resolution Haplogroup G Phylogeny in the Y Chromosome, Revealed by a Set of Newly Characterized SNPs". PLOS ONE. 4 (6): e5792. Bibcode:2009PLoSO...4.5792S. doi:10.1371/journal.pone.0005792. PMC 2686153. PMID 19495413.
• Su, Yeyang; Howard, Heidi C.; Borry, Pascal (2011). "Users' motivations to purchase direct-to-consumer genome-wide testing: An exploratory study of personal stories". Journal of Community Genetics. 2 (3): 135–46. doi:10.1007/s12687-011-0048-y. PMC 3186033. PMID 22109820.
• Tutton, Richard (2004). ""They want to know where they came from": Population genetics, identity, and family genealogy". New Genetics and Society. 23 (1): 105–20. doi:10.1080/1463677042000189606. PMID 15470787. S2CID 22737465.
• Van Oven, Mannis; Kayser, Manfred (2009). "Updated comprehensive phylogenetic tree of global human mitochondrial DNA variation". Human Mutation. 30 (2): E386–94. doi:10.1002/humu.20921. PMID 18853457. S2CID 27566749.
• Williams, Sloan R. (2005). "Genetic Genealogy: The Woodson Family's Experience". Culture, Medicine and Psychiatry. 29 (2): 225–252. doi:10.1007/s11013-005-7426-3. PMID 16249951.
• Wolinsky, Howard (2006). "Genetic genealogy goes global. Although useful in investigating ancestry, the application of genetics to traditional genealogy could be abused". EMBO Reports. 7 (11): 1072–4. doi:10.1038/sj.embor.7400843. PMC 1679782. PMID 17077861.
• Greytak, Ellen M.; Moore, CeCe; Armentrout, Steven L. (2019). "Genetic genealogy for cold case and active investigations". Forensic Science International. 299: 103–113. doi:10.1016/j.forsciint.2019.03.039. PMID 30991209.

External links and resources

• International Society of Genetic Genealogy
• MSNBC – Genetic genealogy links from MSN
• Guide to ancestry testing from Sense about Science
• "Debunking Genetic Astrology" a set of webpages at University College London