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
Keywords	genetic variation
Date of Defense	1976-06-05
Availability	unrestricted
Abstract 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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