V2EX homozygous

Homozygous

释义 Definition

(遗传学)纯合的:指某一基因位点上拥有两份相同等位基因(例如都为 A 或都为 a)。常见于描述个体的基因型(如 AAaa)。(该词也可能在不同语境中有更具体的技术含义。)

发音 Pronunciation

/hmzas/

例句 Examples

A homozygous person has two identical alleles for a gene.
纯合个体在某个基因上具有两份相同的等位基因。

Because the mouse was homozygous for the mutation, all of its offspring showed the same trait when bred with another homozygous mouse.
由于这只小鼠对该突变是纯合的,与另一只纯合小鼠交配后,它的所有后代都表现出相同的性状。

词源 Etymology

来自希腊语构词:homo- 表示“相同”,zyg- 与“结合、配对”(如 zygote 受精卵)相关,**-ous** 为形容词后缀,整体字面含义可理解为“(配对时)相同的”,在遗传学中引申为“等位基因成对且相同”。

相关词 Related Words

文学作品 Literary Works

科普与学术写作中更常见,在经典文学小说中相对少见;但常出现在遗传学与演化生物学的代表性教材与专著里,例如:

  • Genetics: Analysis and Principles(遗传学教材中常用于讲解基因型与孟德尔遗传)
  • Principles of Gene Manipulation and Genomics(基因工程/基因组学教材中用于描述纯合突变体或品系)
  • Introduction to Genetic Analysis(遗传分析教材中常与 heterozygous 对照出现)
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