Medical Definition of Molecular clock
1.
This term has two separate uses.
1. The rate of fixation of mutations in DNA and thus times the rate of genetic diversification.
2. | A biological system capable of maintaining up a timing rhythm or pulse. All such clocks are thought to be entrained by a natural oscillator such as the diurnal rhythm.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
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Lexicographical Neighbors of Molecular Clock
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