genetic polymorphism

Japanese: genetic polymorphism(英語表記)geneticpolymorphism
genetic polymorphism

...Some swallowtail and ostrich butterflies have different markings depending on the season, which is called seasonal polymorphism. When a polymorphic trait is hereditary, as in the case of ABO blood types in humans, it is generally called genetic polymorphism. In a population, mutations arise in every generation, so strictly speaking, there are almost always two or more genotypes, but if the mutants exist only at a low frequency, it is not called genetic polymorphism.

*Some of the terminology that refers to "genetic polymorphism" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…またアゲハチョウやジャノメチョウなどでは季節によって違った斑紋をもつものがあるが,これは季節的多型seasonal polymorphismと呼ばれる。ヒトのABO血液型の場合のように,多型的な形質が遺伝的なものである場合は遺伝的多型genetic polymorphismと総称される。 ある集団を考えると,毎代突然変異により変り者が生じるから,厳密にいえば2種類以上の遺伝子型がほとんどつねに存在することになるが,変異体が低い頻度でしか存在していない場合には遺伝的多型と呼ばない。…

※「genetic polymorphism」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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