The poly A tail added to pre-mRNA
A) is coded for by DNA.
B) increases mRNA stability.
C) reduces mRNA stability.
D) is attached to its 5ʹ end.
E) allows it to be reverse transcribed.

Name: The poly A tail added to pre-mRNA A) is coded for by DNA. B) increases mRNA stability. C) reduces mRNA stability. D) is attached to its 5ʹ end. E) allows it to be reverse transcribed.
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Question

Quizplus · Accepted Answer

The poly A tail added to pre-mRNA increases mRNA stability by protecting it from degradation by exonucleases.

The Poly a Tail Added to Pre-MRNA