human population bottleneck

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Sujet : human population bottleneck
De : eastside.erik (at) *nospam* gmail.com (erik simpson)
Groupes : talk.origins
Date : 25. Dec 2024, 23:40:00
Autres entêtes
Organisation : University of Ediacara
Message-ID : <b832c551-16b7-40c5-a038-d8b48074cefa@gmail.com>
User-Agent : Mozilla Thunderbird
https://www.science.org/doi/10.1126/science.abq7487
Genomic inference of a severe human bottleneck during the Early to Middle Pleistocene transition
Abstract
Population size history is essential for studying human evolution. However, ancient population size history during the Pleistocene is notoriously difficult to unravel. In this study, we developed a fast infinitesimal time coalescent process (FitCoal) to circumvent this difficulty and calculated the composite likelihood for present-day human genomic sequences of 3154 individuals. Results showed that human ancestors went through a severe population bottleneck with about 1280 breeding individuals between around 930,000 and 813,000 years ago. The bottleneck lasted for about 117,000 years and brought human ancestors close to extinction. This bottleneck is congruent with a substantial chronological gap in the available African and Eurasian fossil record. Our results provide new insights into our ancestry and suggest a coincident speciation event.
We had a narrow escape from extinction.  When I read the news, sometimes I think it's too bad we made it.

Date Sujet#  Auteur
25 Dec 24 * human population bottleneck4erik simpson
26 Dec 24 +- Re: human population bottleneck1JTEM
26 Dec 24 `* Re: human population bottleneck2RonO
27 Dec 24  `- Re: human population bottleneck1JTEM

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