Molecular Clock Definition
noun
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.
American Heritage Medicine
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.
American Heritage Medicine
Other Word Forms of Molecular Clock
Noun
Singular:
molecular clock
Plural:
molecular clocksRelated Articles
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