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ABSTRACT:
SUBMITTER: Guan G
PROVIDER: S-EPMC4254068 | biostudies-literature | 2014
REPOSITORIES: biostudies-literature
Guan Guijun G Yi Meisheng M Kobayashi Tohru T Hong Yunhan Y Nagahama Yoshitaka Y
International journal of evolutionary biology 20141118
Sex chromosomes bearing the sex-determining gene initiate development along the male or female pathway, no matter which sex is determined by XY male or ZW female heterogamety. Sex chromosomes originate from ancient autosomes but evolved rapidly after the acquisition of sex-determining factors which are highly divergent between species. In the heterogametic male system (XY system), the X chromosome is relatively evolutionary silent and maintains most of its ancestral genes, in contrast to its Y c ...[more]