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Y chromosome in surname samples: Insghts into surname origin and frequency

AutorCalafell, Francesc
Fecha de publicaciónmar-2015
Citación84th Annual Meeting of the American Assocition of Physical Anthropologists (2015)
ResumenThe biological behavior of the Y chromosome implies that males sharing the same sumame may also share a sirnilar Y chromosome. However, socio-cultural factors, such as polyphyletism, non-paternity, adoption or matrilineal surname transmission. may disconnect transmission of the sumame and from that of the Y chromosome By genotyping I 7 Y- STRs and 68 SNPs in -2,500 male samples that canied one of 50 selected Catalan sumames we could determine sets of descendants of a common ancestor, the population oforrgin ofthe common ancestor, and the date when such a common ancestor lived. Sumame frequency was positively correlated with haplotype diversity, that is, rarer sumames showed the strongest signals of coancestry lntrogression rates of Y chromosomes into a surname by non-paternity, adoption, and transmission of the maternal sumame were estimated al I 7o/o -2 9o/o per generation, with some local variation Average ages for the founders of the sumames were estimated at -450 years, suggesting a delay between the origin of surnames (l2th-l3th centuries) and the systematization of their paternal transmission Finally, we estimate that sumame prediction from a Y-chromosome haplotype, which may have interesting forensic applications, has a -60% sensitivity but a l7o/o false discovery rate, and that in some cases of mispredicted surnames, the ancestors of the proband may have carried the predicted sumame.
DescripciónTrabajo presentado en la 84th Annual Meeting of the American Assocition of Physical Anthropologists (AAPA 2015), celebrada en San Luis (US) del 25 al 28 de marzo de 2015.
URIhttp://hdl.handle.net/10261/155686
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