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Category Archives: population genetics
Calculating pair-wise, unbiased Fst with R:
Calculating Weir and Cockerham’s FST is very useful because it is unbiased with respect to sample size (Weir and Cockerham 1984). Without adjusting allele frequency estimates with respect to sample sizes, estimates of FST can be upwardly biased (see Waples … Continue reading
Posted in methods, population genetics, software
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Videocast for the Wheat et al paper
We published a fascinating paper on the genetics of life history adaptation in a butterfly metapopulations back in May, and the authors very kindly put together a Q&A videocast about their work. This is available on our Wiley Online Library … Continue reading
Posted in interviews, population genetics
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Interpreting Population Genetics Formulae
Whether it’s simple equations like heritability (e.g., R = h2S or the ‘breeders equation’) or more complicated equations like Nei and Chesser’s (1983) unbiased estimator of HS, population genetics papers are filled with math. Early in my career I found … Continue reading
Posted in population genetics
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The ecological fallout: how radioactivity affects wildlife
The current news about radioactivity being released from a nuclear power plant in Japan is sad and worrisome. We are first concerned about the health and safety of individuals who have volunteered to stay at the power plant; they are … Continue reading
Posted in population genetics
Tagged Chernobyl, ecology, Japan, microsatellite, radiation, STR
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Should I use FST, G’ST or D?
I have heard many researchers extolling one estimator over another, saying papers using any other approach should be rejected without review. Yet, although numerous recent papers assess various population genetic parameters and their validity in analyzing population structure, gene flow, … Continue reading
