АвторТема: Early replacement of West Eurasian male Y chromosomes from the east  (Прочитано 565 раз)

0 Пользователей и 1 Гость просматривают эту тему.

Оффлайн NimissinАвтор темы

  • Сообщений: 2381
  • Рейтинг +753/-0
  • Y-ДНК: N-M178 L839+ P298+ M2019+ M2118+ M1991+ M1988+
  • мтДНК: C4b12a
Новое генеалогическое дерево игрек-хромосомы человека в статье

Early replacement of West Eurasian male Y chromosomes from the east
Pille Hallast, Anastasia Agdzhoyan, Oleg Balanovsky, Yali Xue, Chris Tyler-Smith

The genomes of humans outside Africa originated almost entirely from a single migration out ~50,000-60,000 years ago1,2, followed closely by mixture with Neanderthals contributing ~2% to all non-Africans3,4. However, the details of this initial migration remain poorly-understood because no ancient DNA analyses are available from this key time period, and present-day autosomal data are uninformative due to subsequent population movements/reshaping5. One locus, however, does retain extensive information from this early period: the Y-chromosome, where a detailed calibrated phylogeny has been constructed6. Three present-day Y lineages were carried by the initial migration: the rare haplogroup D, the moderately rare C, and the very common FT lineage which now dominates most non-African populations6,7. We show that phylogenetic analyses of haplogroup C, D and FT sequences, including very rare deep-rooting lineages, together with phylogeographic analyses of ancient and present-day non-African Y-chromosomes, all point to East/South-east Asia as the origin 50,000-55,000 years ago of all known non-African male lineages (apart from recent migrants). This implies that the initial Y lineages in populations between Africa and eastern Asia have been entirely replaced by lineages from the east, contrasting with the expectations of the serial-founder model8,9, and thus informing and constraining models of the initial expansion.


Само дерево: https://www.biorxiv.org/content/biorxiv/early/2019/12/06/867317/DC2/embed/media-2.pdf?download=true
« Последнее редактирование: 07 Декабрь 2019, 13:04:23 от Шад »


© 2007 Молекулярная Генеалогия (МолГен)

Внимание! Все сообщения отражают только мнения их авторов.
Все права на материалы принадлежат их авторам (владельцам) и сетевым изданиям, с которых они взяты.