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So, what about the molecular clock hypothesis?

W H Li
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Abstract

Recent studies have provided strong evidence for significant variation in rates of nucleotide substitution among evolutionary lineages. They have also provided evidence for germ-cell division as a major source of mutation (i.e. the generation-time effect hypothesis). Moreover, they have suggested the importance of differences in metabolic rate as a cause of rate variation.

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W H Li. 1993. So, what about the molecular clock hypothesis?. https://doi.org/10.1016/0959-437x(93)90011-d

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