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Genetic variability and population structure of Poecilia latipinna


THE pattern of genetic variability among natural populations is commonly attributed to the influence of environmental heterogeneity on natural selection1,2. However, I report here that in Poecilia latipinna (Pisces: Poeciliidae), a small ovoviviparous fish, genetic variability is more closely related to local population structure, in particular, the adult sex ratio.

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SIMANEK, D. Genetic variability and population structure of Poecilia latipinna. Nature 276, 612–614 (1978).

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