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10. Transcription

10. Transcription / Overview of Transcription / Problem 3

Which of the following statements is incorrect regarding post-transcriptional modifications in pre-mRNA?

A

Addition of a modified guanine nucleotide, known as the cap, to the 5' end of the pre-mRNA molecule to protect it from degradation.

B

Removing introns and joining exons in a pre-mRNA molecule to create a mature mRNA transcript.

C

The poly(A) tail is a sequence of adenine nucleotides added to the 5' end of the mRNA molecule.

D

Splicing allows for the production of multiple proteins from a single pre-mRNA transcript by selectively including or excluding exons.

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