A particular triplet of bases in the coding sequence of DNA is AAA. The anticodon on the tRNA that binds the mRNA codon is
A) TTT.
B) UUA.
C) UUU.
D) AAA.
E) either UAA or TAA, depending on first base wobble.

Question

Quizplus · Accepted Answer

The anticodon on the tRNA that binds the mRNA codon is complementary to the mRNA codon, not the DNA sequence. The mRNA codon for AAA in DNA is UUU, so the tRNA anticodon that pairs with this mRNA codon is AAA's complement, which is UUU.

A Particular Triplet of Bases in the Coding Sequence of DNA