V2EX heterozygous

Heterozygous

释义 Definition

(遗传学)杂合的 / 异型合子:指某一基因位点上携带两个不同等位基因(如 Aa),与“纯合(homozygous)”相对。也常用于描述个体在某基因上的基因型状态。

发音 Pronunciation (IPA)

/htrzas/

例句 Examples

She is heterozygous for the gene that affects lactose tolerance.
她在影响乳糖耐受性的基因上是杂合型。

Because the child is heterozygous, the recessive trait may not appear, but it can still be passed on to the next generation.
由于这个孩子是杂合型,隐性性状可能不会表现出来,但仍可能传给下一代。

词源 Etymology

来自希腊语构词成分:**hetero-**(“不同的”)+ **zyg-**(与“结合、配对”相关,源自表示“轭/结合”的词根)+ -ous(形容词后缀)。字面可理解为“由不同配对而成的”,用于遗传学中描述“携带不同等位基因”的状态。

相关词 Related Words

文学作品 Literary Works

  • The Selfish Gene(Richard Dawkins)在讨论基因、遗传与选择机制时常涉及“杂合/纯合”等基本概念。
  • The Gene: An Intimate History(Siddhartha Mukherjee)介绍遗传学发展与基因概念时会使用包括 heterozygous 在内的术语。
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