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Author Topic:   Is The Fossil Record an indication of Evolution?
sfs
Member (Idle past 2534 days)
Posts: 464
From: Cambridge, MA USA
Joined: 08-27-2003


Message 73 of 88 (71764)
12-08-2003 10:18 PM
Reply to: Message 70 by NoBody
12-08-2003 5:18 AM


quote:
Hey guys I have a question. I am researching phylogenies and I am wondering, are these phylogenies based from theoretical silent mutations (i.e. genetic drift,mutation,etc)?
(Not exactly my field, but . . .) I'm not sure exactly what you mean by basing a phylogeny on silent mutations. Phylogenies are based on comparisons of DNA sequence between organisms. The particular sequence chosen can be nonfunctional, in which case all mutations are neutral, or it can be functional (a gene, generally), in which case many mutations will be deleterious. Neutrally evolving sequences change too fast to be useful for any kind of deep phylogeny, so most phylogenies use genes, since these are kept from varying too fast by natural selection.

This message is a reply to:
 Message 70 by NoBody, posted 12-08-2003 5:18 AM NoBody has not replied

  
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