Fun paper by Vladimir Schur @jesvedberg @pamedina10 @RussCorbett and @ras_nielsen!https://twitter.com/biorxiv_genomic/status/1158469126932877314 …
@sivan_yair and I read this today and had a question — what are the admixture proportions behind fig 4? Does this effect of shorter tract lengths for stronger selection (conditioning on present-day allele frequency) depend on staying for a long time below the drift-barrier freq?pic.twitter.com/COrXg9FCBU
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That is perhaps one way to look at it. Conditional on a high current frequency and an old introgression event, the paths with highest probabilities are paths where the increase in allele frequency is recent. 1/2
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With a recent increase there is less chance of back-recombination to the introgressed haplotype background. Hence, the tracts will be shorter. 2/2
End of conversation
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