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The Ecological Genetics of Abnormal Abdomen in Drosophila mercatorum

  • Alan R. Templeton
  • Hope Hollocher
  • Susan Lawler
  • J. Spencer Johnston
Part of the Monographs in Evolutionary Biology book series (MEBI)

Abstract

Natural selection and adaptation are central to theories of organismal evolution. In order to study natural selection in the field, four basic problem areas must be investigated as part of an ecological genetics research program. The first problem is to document the genetic basis of the phenotypic variation observed in nature. Without genetic variation underlying the phenotypic variation, it is impossible to have an evolutionary response to selective forces. The second problem is to determine the phenotypic expression of this genetic variation under field conditions. Phenotypes are the result of genotype-by-environment interactions, and there is no guarantee that phenotypic expression in the laboratory corresponds to that found in nature. The 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.

Keywords

Morphological Expression Life History Effect Ecological Genetic Early Fecundity Average Excess 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • Alan R. Templeton
    • 1
  • Hope Hollocher
    • 1
  • Susan Lawler
    • 1
  • J. Spencer Johnston
    • 2
  1. 1.Department of BiologyWashington UniversitySt. LouisUSA
  2. 2.Department of EntomologyTexas A & M UniversityCollege StationUSA

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