哈尔丹的决斗：基因组内冲突、自私的 Y 染色体与物种形成。

Haldane's duel: intragenomic conflict, selfish Y chromosomes and speciation.

机构信息

Department of Biology, San Francisco State University, San Francisco, CA, USA.

出版信息

Trends Genet. 2022 Jan;38(1):8-11. doi: 10.1016/j.tig.2021.05.008. Epub 2021 Jun 21.

DOI:10.1016/j.tig.2021.05.008

Abstract

Haldane's rule, which states that the heterogametic sex (XY or ZW females) fares more poorly in interspecific hybrids, is generally attributed to absence of one of the two species' X/Z chromosomes. However, Haldane's rule is also observed in mouse placentas despite paternal X silencing. This pattern could reflect Y chromosomes having evolved to promote growth due to maternal-paternal conflict. If so, balanced sex investment arises from a complex intra- and intergenomic duel.

摘要

哈代定律指出，在种间杂种中，异型性别的个体（XY 或 ZW 雌性）表现较差，这通常归因于两种物种的 X/Z 染色体之一的缺失。然而，尽管存在父本 X 染色体失活，哈代定律也在小鼠胎盘组织中观察到。这种模式可能反映了 Y 染色体的进化是为了促进生长，因为存在母本-父本冲突。如果是这样，平衡的性别投资源于复杂的种内和种间基因组决斗。