Hi folks,

first of all I am not a biologist but I'm interested in this topic.
I have read some papers where analysis of cytochrome b protein was used for phylogenetic analysis. Ok so far, but I do not really understand which characters of the cytochrome b make specimens distinguishable. Could someone please give me a hint on this?

Lets say I have a part of a sequence like:

1 atgccccacc actacatttt aaccctattt ggtctcctac
1 atgccccacc actacattct aaccctattc ggccttctgc
1 atgccccacc attacatcct aaccctgttc ggcctcctac
1 ccactacatt ctaaccctat ttggccttct accagtagca
1 ccactacatc ttaaccctat ttggtctctt acctgtagca

.... and so on...

Are similar/distinct base pairs counted here or what?

Thanks a lot for help!

Cheers,
Wulf
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http://www.leiopython.de ,
http://www.herpers-digest.com