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SUMMARY:Adaptation in continuous populations with migration and genetic dr
 ift - Polechova\, J (IST Austria)
DTSTART:20101122T143000Z
DTEND:20101122T152000Z
UID:TALK28083@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:What are the intrinsic causes of the limits to adaptation thro
 ughout a species' range and at its edge? I give an introduction to the pro
 blem\, and provide some results on the evolution of clines in allele frequ
 encies due to drift\, selection and migration:\n\nRandom genetic drift shi
 fts clines from side to side\, alters their width\, and distorts their sha
 pe. The wobbling in position makes the expected cline wider. However\, loc
 ally\, drift drives alleles towards fixation\, so individual clines can of
 ten be narrower. I show that the relation between the deterministic cline 
 width\, expected cline width\, and width of the expected cline is driven b
 y the average standardized variance of local allele frequencies. 
LOCATION:Seminar Room 1\, Newton Institute
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