Heinz Fraenkel-Conrat induced point mutations in the coat proteins of TMV and looked for mutations in the resulting proteins.By examining single-base changes in the mRNA,Conrat proved that
A) the genetic code is overlapping.
B) the genetic code is nonoverlapping.
C) the genetic code is redundant.
D) there are 20 amino acids.
E) the genetic code is triplet.
Correct Answer:
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