Y-chromosome diversity in Catalan surname samples: insights into surname origin and frequency
Neus Solé-Morata|Jaume Bertranpetit|David Comas|Francesc Calafell
The biological behavior of the Y chromosome, which is paternally inherited, implies that males sharing same surname may also share a similar chromosome. However, socio-cultural factors, such as polyphyletism, non-paternity, adoption, or matrilineal transmission, prevent joint transmission and By genotyping 17 Y-STRs 68 SNPs in ~2500 male samples each carried one 50 selected Catalan surnames, we could determine sets descendants common ancestor, population origin date when ancestor lived. Haplotype diversity was positively correlated with frequency, is, rarer surnames showed strongest signals coancestry. Introgression rates chromosomes into by maternal were estimated at 1.5-2.6% per generation, some local variation. Average ages for founders ~500 years, suggesting delay between (twelfth thirteenth centuries) systematization their paternal transmission. We have found that, general, foreign etymology does not often result non-indigenous founders; however, bearers an Arabic show excess North African haplotypes. Finally, estimate prediction from Y-chromosome haplotype, interesting forensic applications, has ~60% sensitivity but 17% false discovery rate.
European Journal of Human Genetics|Europe PMC (PubMed Central)|PubMed Central|PubMed