genetics

| December 7, 2015

Organisms on Earth use 4 different bases (A, T, C, and G) to encode 20 different amino acids. You find
an alien life form on a different planet that similarly follows the central dogma and transcribes DNA to
RNA which is translated to protein. However, you find the alien life on that planet makes proteins
made of 60 different amino acids.
1.Assuming the alien life uses triplet codons and needs at least one stop codon to terminate
translation, what is the minimum number of bases their DNA must contain?
2. You find that the alien life¬Ěs DNA is made of only 2 different bases (A and T). What is the
minimum number of bases needed to form a codon if they are to encode 60 different amino
acids?

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