Which of these is the function of a poly (A)signal sequence?
A)It adds the poly (A)tail to the 3' end of the mRNA.
B)It codes for a sequence in eukaryotic transcripts that signals enzymatic cleavage ~10-35 nucleotides away.
C)It allows the 3' end of the mRNA to attach to the ribosome.
D)It is a sequence that codes for the hydrolysis of the RNA polymerase.
E)It adds a 7-methylguanosine cap to the 3' end of the mRNA.

Question

Quizplus · Accepted Answer

The poly (A) signal sequence is a sequence in eukaryotic transcripts that signals enzymatic cleavage ~10-35 nucleotides away from the end of the mRNA. This cleavage is followed by the addition of the poly (A) tail to the 3' end of the mRNA.

Which of These Is the Function of a Poly (A)signal