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Name: Daulat
Status: Student
Grade:  6-8
Location: CA
Country: United States
Date: April 2005

All the amino acids except methionine and trytophan are represented by more than one codon. In case of these amino acids with more than one codon is there any order of preference. lets say for the amino acid lysine (K) which of the codon is more preferred either AAA or AAG.

This can only be answered by sequencing several different genes and determining the relative frequency of the codons AAA and AAG. The next question would be, do the relative frequencies of these two codons vary from species to species. By examining the known sequences of different genes from different species, you could answer this question.

Regards, Ron Baker, Ph.D.

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