Titlebook: Ecological and Evolutionary Genetics of Drosophila; J. S. F. Barker,William T. Starmer,Ross J. MacInty Book 1990 Springer Science+Business

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Experimental Analysis of Habitat Selection and Maintenance of Genetic Variation,geneity as a significant factor in maintaining polymorphisms. Nevertheless, he does point out that it is not at all clear what proportion of polymorphic loci are maintained by environmental heterogeneity or by other mechanisms, and emphasises the need for critical experimentation to substantiate causal ecological-genetic relationships.

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https://doi.org/10.1007/978-3-642-51963-5ehavior. Such variation, it is believed, may be the raw material on which selection could bring about evolutionary changes in host usage. Because of the diversity of resources they use and the facility with which genetic analyses can be carried out, a substantial number of recent studies have focused on various species of ..

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,Einsatzplanung für die Baustelle,ension of the myriad effects of selection. This view is well expressed in the following quotation from Watt (1985, p. 124) which has its origins in a research strategy advocated by Clarke (1975) and Koehn (1978).

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https://doi.org/10.1007/978-3-8349-3571-7he third problem is to relate the phenotypic variation to variation in life history. Natural selection requires fitness differences, and the potential for selection cannot be evaluated in a predictive fashion unless differences in life history attributes can be inferred. The fourth problem is to estimate the structure of the natural population.

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