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Frequency/distribution of nucleotides/amino acids before selection

Dr.Ram Samudrala ram.samudrala at stanford.nojunkemail
Wed Oct 21 12:53:14 EST 1998

Have there been any estimates published on the frequency/distribution
of nucleotides/amino acids in DNA/protein sequences PRIOR to
selection, i.e., before selection kicks in? I can get the frequencies
of amino acids in known protein sequences, but these proteins have
generally arisen through natural selection.


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