Before the genetic code was actually known,Francis Crick predicted that it was degenerate.What piece of evidence led him to make this prediction?
A)All proteins looked the same.
B)All proteins were made of amino acids.
C)He noted that the base composition of the DNAs of various bacteria varied greatly while the amino acid composition of their proteins varied very little overall.
D)He noted that the base composition of the DNAs of various bacteria varied little while the amino acid composition of their proteins varied greatly overall.
E)The code was non-overlapping.

Question

Quizplus · Accepted Answer

Crick observed that despite significant variations in DNA base composition among different bacteria, the amino acid composition of their proteins remained relatively constant, suggesting that multiple codons could encode the same amino acid, leading to the concept of degeneracy in the genetic code.

Before the Genetic Code Was Actually Known,Francis Crick Predicted That