Title page for ETD etd-07282008-135047
|Type of Document
||Elder, John Franklin
||Molecular drive and population differentiation of satellite DNAs in Cyprinodon variegatus
||Biology (Molecular and Evolution)
|Turner, Bruce J.
|Cranford, Jack A.
|Hallerman, Eric M.
|Lederman, Muriel L.
|Date of Defense
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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