Title page for ETD etd-09242008-113823

Type of Document Master's Thesis
Author Hazel, Wade Nelson
URN etd-09242008-113823
Title The genetic basis of pupal color dimorphism in Papilio polyxenes and its maintenance by natural selection.
Degree Master of Science
Department Zoology
Advisory Committee
Advisor Name Title
West, David A. Committee Chair
Cochran, Donald G. Committee Member
Paterson, Robert A. Committee Member
Siegel, Paul B. Committee Member
  • genetic variation
Date of Defense 1976-06-05
Availability unrestricted

A survey of the genetic variation in the ability to produce brown pupae was conducted using 23 broods reared from wild caught females. In addition a selection experiment was designed to investigate the genetic basis of the dimorphism. It was concluded that the genetic basis of the dimorphism is a threshold trait with quantitative genetic variation underlying the two phenotypes of green and brown pupal color. It was further concluded that the dimorphism is maintained in nature by weak stabilizing selection, thus explaining the occurrence of mismatches in pupal and background color.

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