Evolutionary clock: nonconstancy of rate in different species
- PMID: 5065730
- DOI: 10.1126/science.177.4048.530
Evolutionary clock: nonconstancy of rate in different species
Abstract
By using various methods for comparing polypeptide sequences we find that the evolutionary divergence of rattlesnake cytochrome c from cytochromes c of species in other classes has been more rapid than that of cytochrome c of another reptile, the snapping turtle. This suggests that the evolutionary rate of change of cytochromes c is species-dependent as well as time-dependent.
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