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Humans slow mutation rate (Science)

Joe Felsenstein joe at evolution.genetics.washington.edu
Fri Apr 21 19:26:03 EST 1995


In article <D7DDBp.Jq1 at zoo.toronto.edu>,
Mark Siddall <mes at zoo.toronto.edu> wrote:
>
>I often wish Zuckerlandl and Pauling never wrote that paper.
>There is no clock. Independent lineages (post cladogenesis) are just that
>independent. 

No, I doubt they are _that_ independent.  Do you mean to claim that the
biology of (say) two sibling species of sparrow are sufficiently
different (their mutational repair systems, for example) that they evolve
at _totally_ independent rates?  That in the triple (song sparrow,
chipping sparrow, oak tree) that the first two are not more similar in
rate of molecular evolution?   I suspect that clocks are useful, if not
perfect, any time you get down near the species level.

-----
Joe Felsenstein         joe at genetics.washington.edu     (IP No. 128.95.12.41)
 Dept. of Genetics, Univ. of Washington, Box 357360, Seattle, WA 98195-7360



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