英语词汇“molecular clock”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	molecular clock
释义	molecular clock molecular clock n.1. An assumed approximately constant rate of change over evolutionary time in the nucleotide sequences of DNA molecules and the amino acid sequences of protein molecules.2. A technique based on this assumption, in which the amount of time since two species or other taxa diverged from a common ancestor is estimated by measuring the number of differences between certain gene or protein sequences of the taxa.
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