The 3' Poly-A tail is attached to
A)the Poly-A polymerase enzyme.
B)the mRNA.
C)the tRNA.
D)the coding strand of the DNA molecule.
E)the template strand of the DNA moleculE.

Question

Quizplus · Accepted Answer

The 3' Poly-A tail is a sequence of adenine nucleotides that are added to the 3' end of the mRNA molecule during post-transcriptional modification. This tail is not present on the DNA template strand, nor is it added by the Poly-A polymerase enzyme or tRNA. Therefore, the correct answer is B, which is the mRNA itself.

The 3' Poly-A Tail Is Attached to