V2EX continuous variation

Continuous Variation

Definition / 定义

“连续变异”:指某一性状在个体之间呈连续分布的差异,没有明显的类别界限(常见于身高、体重、皮肤颜色等);通常与多基因遗传环境因素共同作用有关。(在不同学科语境中也可泛指“连续的变化/差异”。)

Pronunciation / 发音(IPA)

/kntnjus vrien/

Examples / 例句

Continuous variation is common in human height.
连续变异在人类身高中很常见。

Because many genes and environmental factors interact, traits like blood pressure often show continuous variation across a population rather than falling into neat categories.
由于许多基因与环境因素共同作用,血压等性状在群体中往往表现为连续变异,而不是落入清晰分明的类别。

Etymology / 词源

continuous 来自拉丁语 continuus(“连续的、不间断的”);variation 来自拉丁语 variatio(“变化、差异”)。合在一起,“continuous variation”直译为“连续的差异/变化”,在生物学与遗传学中逐渐固定为描述“性状呈连续分布”的术语。

Related Words / 相关汇

Literary Works / 文学与经典著作中的用例

  • On the Origin of Species(《物种起源》) Charles Darwin:讨论自然选择与个体差异时常涉及“变异的连续性”这一核心观念。
  • The Genetical Theory of Natural Selection(《自然选择的遗传学理论》) R. A. Fisher:在数量遗传学框架下系统讨论与“连续变异”相关的性状分布与遗传机制。
  • Introduction to Quantitative Genetics(《数量遗传学导论》) D. S. Falconer & T. F. C. Mackay:以“连续变异”为基础概念讲解数量性状与多基因效应。
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