Why does dosage compensation differ between XY and ZW taxa?

@article{Naurin2010WhyDD,
  title={Why does dosage compensation differ between XY and ZW taxa?},
  author={Sara Naurin and Bengt Hansson and Staffan Bensch and Dennis Hasselquist},
  journal={Trends in genetics : TIG},
  year={2010},
  volume={26 1},
  pages={
          15-20
        }
}
Recent studies have demonstrated an extensive male bias in the gene expression on Z chromosomes in species with a ZW sex determination (e.g. birds), suggesting that ZW females have incomplete dosage compensation. We propose that the extensive male bias on Z chromosomes is caused by the functional properties of male-adapted genes, which make them unsuitable for high expression in females, and that ZW females are dosage-compensated to a point where they have achieved enough compensation to… CONTINUE READING
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