Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK.
Institute of Evolutionary Biology, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3FL, UK.
Curr Biol. 2020 Aug 3;30(15):R871-R873. doi: 10.1016/j.cub.2020.06.008.
Y and W chromosomes start degenerating after they evolve a non-recombining region that is always heterozygous in males (Y) or females (W), sometimes losing almost all genes that were originally present on their X or Z counterparts. A new model for such degeneration involves evolutionary change in regulatory sequences.
Y 和 W 染色体在进化出一个在雄性（Y）或雌性（W）中总是杂合的非重组区域后开始退化，有时会失去几乎所有最初存在于其 X 或 Z 同源染色体上的基因。这种退化的一个新模型涉及调控序列的进化变化。
