Some geneticists consider the third base of a codon to be less important than the first two bases as a code for a specific amino acid. All of the following observations would support this hypothesis EXCEPT
(A) Any of the bases following a CC_ sequence will position a proline.
(B) Even though the A is replaced by a C, the triplet AGG will still position to an arginine.
(C) Even though the last A is replaced by a G, the triplet UAA will still terminate a polypeptide chain.
(D) An AUU triplet codes for isoleucine, while a UUU triplet codes for phenylalanine.
(E) There are three codons, any of which will position an isoleucine.
Answer: B
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