通过性行为，大自然在向我们传达一些重要的信息。

Through Sex, Nature Is Telling Us Something Important.

机构信息

University of Michigan, Ecology and Evolutionary Biology, Natural Science Building, Ann Arbor, MI 48109, USA.

出版信息

Trends Genet. 2018 May;34(5):352-361. doi: 10.1016/j.tig.2018.01.003. Epub 2018 Feb 4.

DOI:10.1016/j.tig.2018.01.003

Abstract

Theoretically, a variety of mechanisms can make amphimixis advantageous due to reshuffling of offspring genotypes. Recently, it has been shown experimentally that some of these mechanisms can indeed work in artificial populations. However, we still do not know which of them, if any, are relevant in nature, and the available indirect estimates seem to suggest that neither negative nor positive selection in natural populations is strong enough to provide evolutionary protection for obligate amphimixis. Thus, progress in understanding the evolution of amphimixis will depend on direct measurements of the strength of natural selection.

摘要

从理论上讲，由于后代基因型的重新组合，各种机制都可以使异体交配变得有利。最近的实验表明，这些机制中的一些确实可以在人工种群中起作用。然而，我们仍然不知道其中哪些机制（如果有的话）在自然界中是相关的，而且现有的间接估计似乎表明，自然种群中既没有负选择也没有正选择强到足以提供对强制性异体交配的进化保护。因此，理解异体交配进化的进展将取决于对自然选择强度的直接测量。