Ushakov B P, Bugaeva E A, Vinogradova A N, Dzhamusova T A
Tsitologiia. 1977;19(1):76-81.
The determination of organismal heat resistance and qualitative composition of polymorphous liver esterases during heat acclimation (25 degrees) has been made on frogs Rana temporaria. During hybernation the most heat resistant frogs possess the homozygous allele of A2 esterase. Heat acclimation and the summer rise in temperature in nature lead to an increase in heat resistance of frogs and to the disappearance of selective advantage of animals possessing the isoenzyme of the A2A2 esterase. The functional homeostasis of populations can maintain biochemical polymorphism regardless of the selective advantage of individuals possessing one of the homozygous alleles of the isoenzyme.
在25摄氏度热适应期间，对欧洲林蛙的机体耐热性和多态性肝脏酯酶的定性组成进行了测定。在冬眠期间，最耐热的青蛙拥有A2酯酶的纯合等位基因。热适应以及自然界中夏季温度的升高会导致青蛙耐热性增加，并且拥有A2A2酯酶同工酶的动物的选择优势消失。种群的功能稳态可以维持生化多态性，而与拥有同工酶纯合等位基因之一的个体的选择优势无关。
