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Russian Journal of Ecology - 相似文献
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P. A. Panteleev 《Russian Journal of Ecology》2000,31(2):69-73
It is demonstrated that the noncoincidence of vectors of geographic variation and alterations of the environmental temperature
factor, which contradicts the Bergmann rule, may indicate the presence of a new species. Exterior characters of the new species,
in the author's opinion, may be formed by saltation during one generation. It only remains for natural selection to fix the
finished form under conditions of long-term stabilization of the changed norm of reaction to a new quality of the temperature
factor. 相似文献
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