Biology – Quantitative Biology – Populations and Evolution
Scientific paper
2004-04-19
Genetics 169, 1175-1178 (2005)
Biology
Quantitative Biology
Populations and Evolution
8 pages, 2 figures
Scientific paper
We show how to incorporate fluctuations of the recombination rate along the chromosome into standard gene-genealogical models for the decorrelation of gene histories. This enables us to determine how small-scale fluctuations (Poissonian hot-spot model) and large-scale variations [Kong et al. (2002)] of the recombination rate influence this decorrelation. We find that the empirically determined large-scale variations of the recombination rate give rise to a significantly slower decay of correlations compared to the standard, unstructured gene-genealogical model assuming constant recombination rate. A model with long-range recombination-rate variations and with demographic structure (divergent population) is found to be consistent with the empirically observed slow decorrelation of gene histories. Conversely, we show that small-scale recombination-rate fluctuations do not alter the large-scale decorrelation of gene histories.
Eriksson Anders
Mehlig Bernhard
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