A method of geographic mapping of the stationary (limiting) gene migration rate has been developed. The method is based on approximation of the empirical distribution of gene frequencies by a theoretical steady-state distribution. The maximum likelihood method and the χ2 minimization method are used to obtain consistent estimations of the gene migration rate as a parameter of the steady-state distribution. The new method makes it possible to determine the geographical distribution of the ratio between the properties of the population migration structure described by the stepping-stone and island models and to construct a geographical map of χ2 values. This map approximately reflects the distribution of natural selection pressure on the gene pool if genetic processes are quasisteady.
Russian Journal of Genetics – Springer Journals
Published: Oct 16, 2004
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