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SUMMARY:Multiple merger coalescents: truncated offspring distributions\, l
 arge sample sizes\, and bottlenecks - Jonathan Chetwynd-Diggle (University
  of Oxford)
DTSTART;VALUE=DATE-TIME:20190520T120000
DTEND;VALUE=DATE-TIME:20190520T130000
UID:https://talks.ox.ac.uk/talks/id/14ab186f-d324-4b6a-b6fd-cb1cf5797eb0/
DESCRIPTION:Recent genetic profiling of 30\,000 Icelandic cod have produce
 d data which suggests that a Lambda coalescent rather than Kingman's coale
 scent is a suitable model for their ancestral lineages.  We will discuss a
  class of population models analysed in Schweinsberg\, 2003\, along with i
 ts applicability as a population model. We have also looked into issues wh
 ich arise in using coalescent models for the large sample sizes modern seq
 uencing technology has enabled. Work by Wakeley and Takahashi\, 2003\, sho
 wed a breakdown in the coalescent approximation when the sample size is on
  the same order as effective population size. We will show heuristic argum
 ents that show why the breakdown appears so late in the Kingman regime and
  extend the arguments to the Lambda regime. Joint work with Bjarki Eldon a
 nd Alison Etheridge.\nSpeakers:\nJonathan Chetwynd-Diggle (University of O
 xford)
LOCATION:Mathematical Institute\, Woodstock Road OX2 6GG
TZID:Europe/London
URL:https://talks.ox.ac.uk/talks/id/14ab186f-d324-4b6a-b6fd-cb1cf5797eb0/
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DESCRIPTION:Talk:Multiple merger coalescents: truncated offspring distribu
 tions\, large sample sizes\, and bottlenecks - Jonathan Chetwynd-Diggle (U
 niversity of Oxford)
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