Title page for ETD etd-07282008-135047


Type of Document Dissertation
Author Elder, John Franklin
URN etd-07282008-135047
Title Molecular drive and population differentiation of satellite DNAs in Cyprinodon variegatus
Degree PhD
Department Biology (Molecular and Evolution)
Advisory Committee
Advisor Name Title
Turner, Bruce J. Committee Chair
Cranford, Jack A. Committee Member
Hallerman, Eric M. Committee Member
Lederman, Muriel L. Committee Member
Pedersen, Karl Committee Member
Keywords
  • DNA
Date of Defense 1993-02-05
Availability restricted
Abstract

The genome of the Atlantic sheepshead minnow, Cyprinodon variecratus (cyprinodontidae) contains at least two highly repetitive satellite DNA sequences. The major satellite sequence is present at roughly 106 copies per haploid genome. The basic repeating unit averages 170 bp in length, tandemly arranged, and is bracketed by a Hind III restriction site. The Hind III satellite has little or no sequence smilarity with other fish satellite DNAs reported in the 1iterature. Comparative hybridization experiments detect related sequences in the genomes of several species of pupfish of the genus Cyprinodon as well as in some cyprinodontid species of the genera Jordanella and Floridichthys. No significant hybridization was detected with the New World species Cualac tesselatus and Megupsilon aporus or within species of the Old World genera Valencia and Aphanius.

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