Question

Which of the following does not occur before a eukaryotic mRNA is exported from the nucleus?! a. The ribosome binds to the mRNA. b. RNA polymerase dissociates. c. 7-methyl-G is added in a 5' to 5' linkage to the mRNA. d. The mRNA is polyadenylated at its 3' end. e. Splicing out of introns in mRNA

Answer 1

The correct answer is b. RNA polymerase dissociates. Hence, b) is correct.

Step-by-step explanation:

The correct answer is b. RNA polymerase dissociates. Before a eukaryotic mRNA is exported from the nucleus, several modifications occur, including the addition of a 5' cap, splicing out of introns, and polyadenylation at the 3' end.

However, the dissociation of RNA polymerase from the DNA template occurs during transcription, not during mRNA export.