Article
A model of the evolution of the unusual sex chromosome system of Microtus oregoni.
Heredity - 1 Apr 2001
Charlesworth B, Dempsey N D
Abstract excerpt
In the creeping vole, Microtus oregoni, females are X0 and males are XY. In the female germ line, mitotic nondisjunction ensures that the products of meiosis all carry the X chromosome. Similarly, mitotic nondisjunction in the male germ line leads to the production of 0 and Y sperm. We propose that the present situation in M. oregoni has evolved by invasion of a normal XX/XY system by a mutant X chromosome, X',...
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