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微演化

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EntityQ680054· pop 38· linked from 455 articles

Microevolution is the change in allele frequencies that occurs over time within a population. This change is due to four different processes: mutation, selection (natural and artificial), gene flow and genetic drift. This change happens over a relatively short (in evolutionary terms) amount of time compared to the changes termed macroevolution.

Wikidata facts

Instance of
process
Subclass of
evolution
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opposite of
macroevolution
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Article · 中文

微演化(英語:Microevolution),又譯為微觀演化,指一個族群經過少許幾個世代之後,產生的小尺度等位基因頻率改變,其變異程度為物種或物種以下。此變異可能會經過一些過程:突變、天擇、基因流、基因漂變以及非隨機交配。 群體遺傳學研究微演化的數學結構;生態遺傳學則從野生世界中觀察微演化。微演化是一般能觀察到的演化現象,例如細菌的抗藥性。

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微演化 · Vinony