sequence divergence puzzle

Sam King mjkg at dna.bio.warwick.ac.uk
Sat Jan 30 12:21:08 EST 1999


I am not an evolutionary biologist but I am in the middle of writing
my thesis and have a problem understanding this information. I have
two sialidase genes from streptococcus pneumoniae which are more
conserved at the nucleotide level (60%) than the amino acid level
(53%). I thought this was usually the other way round.
Ive checked the synonymous/nonsynonymous values using jukes-cantor 
theyare 1.2+-0.25/0.46+-0.046.
 Does anyone have any ideas? or other examples like this? 
Sam king




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