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Re: Rconstructing DNA (was Re: Dino-fuzz found in amber?)
> So let's say ... you do come up
> with "likely" _T. rex_ DNA sequence for this peptide. What then?
> What can you do with it? You'll never know if you're right, because
> we're never going to find _T. rex_ DNA. Not only do I regard the
> entire exercise as methodologically flawed, but I don't understand the
> point of the exercise.
This pretty much sums up my thoughts.
Yes you can say one DNA sequence is more likely than another - but you are only
saying it is more likely because of the phylogenetic relationships.
You didn't derive that from the amino acid sequence.
I don't understand the point.
It almost seems like a way to "launder" assumptions such that they look like
If you only have amino acid sequences, just stick to working with amino acid
sequences. Trying to construct a "maximum likelihood" DNA sequence sounds like
it could lead to trouble/ false assumption, and it doesn't produce anything