Journal Title
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Publisher
Springer, Boston, MA
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Authors: M J D White
Publish Date: 1970
Volume: , Issue: , Pages: 237-262
Abstract
The name of Th Dobzhansky will always be associated with the concepts of heterosis and adaptive genetic polymorphisms in natural populations of sexually reproducing organisms But the relationship between these concepts is still in part controversial and even after approximately 35 years of serious study of these phenomena in a variety of organisms both in nature and in the laboratory it is by no means clear how far the adaptive significance of most polymorphisms is to be ascribed to “pure heterosis” ie superiority of the heterozygote in all environments and how far to “annidation” in the terminology of Ludwig 1950—ie an adaptive correspondence between the various genotypes present in the population and the alternative ecological niches present in the environment
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