center of origin hypothesis

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The generalization that the genetic variability is greatest in the territory where a species arose. Conversely, marginal populations are likely to show a limited number of adaptations. Therefore, the regions where various agriculturally important plant species arose can sometimes be identified by determining the amounts of genetic polymorphism in different geographic races. See Chronology, 1926, Vavilov.

Subjects: Genetics and Genomics.

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