Wallace B
Department of Biology, Virginia Polytechnic Institute and State University, Blacksburg 24061.
J Hered. 1991 Mar-Apr;82(2):89-95. doi: 10.1093/oxfordjournals.jhered.a111061.
During the four decades or more since Dobzhansky introduced the term "coadaptation" to refer to the commonly observed selective superiority of inversion heterozygotes in populations of Drosophila pseudoobscura, the definition of the term has evolved, as have views concerning the rapidity with which coadaptation might occur. Indeed, the paucity of demonstrated instances of linkage disequilibrium in natural populations has led many to dismiss coadaptation as a factor in evolutionary change. The present article reviews the reasons why coadaptation (and the equivalent expression, "integration of gene pools") was proposed as a phenomenon occurring in local (or experimental) populations, offers supporting data obtained through a reanalysis of data on irradiated populations of D. melanogaster, and concludes that sound evidence supports coadaptation as a factor in the genetic change of populations.
自从多布赞斯基引入“共适应”一词来指代在拟暗果蝇种群中常见的倒位杂合子的选择优势以来的四十多年里，该术语的定义已经演变，关于共适应可能发生的速度的观点也同样如此。实际上，自然种群中已证明的连锁不平衡实例的匮乏导致许多人摒弃共适应，认为它不是进化变化的一个因素。本文回顾了共适应（以及等效表述“基因库整合”）被提出作为在局部（或实验）种群中发生的一种现象的原因，提供了通过对黑腹果蝇受辐照种群数据的重新分析获得的支持数据，并得出结论：有力的证据支持共适应是种群遗传变化的一个因素。
