The evolution of restricted recombination in sex chromosomes.

@article{Bergero2009TheEO,
  title={The evolution of restricted recombination in sex chromosomes.},
  author={Roberta Bergero and Deborah Charlesworth},
  journal={Trends in ecology & evolution},
  year={2009},
  volume={24 2},
  pages={94-102}
}
In species with separate sexes, sex determination often has a genetic basis, and in a wide diversity of taxa a pair of cytologically distinguishable 'sex chromosomes' are found such that the chromosome complements of males and females differ (males are often XY and females XX, but sometimes females are ZW whereas males are ZZ). Recent evidence from sequences of sex-linked genes confirms classical genetic evidence that these chromosomes are a homologous pair, evolved from a normal chromosome… CONTINUE READING