Multiple Choice
Most mature eukaryotic mRNAs have a string of nucleotides at their 3' end referred to as a poly-what?
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10. Transcription
RNA Modification and Processing
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One modification to mRNA transcripts is the addition of a tail that is composed of the:
A
nucleotide cytosine
B
nucleotide adenine
C
nucleotide uracil
D
nucleotide guanine
Verified step by step guidance1
Understand that mRNA transcripts undergo several modifications after transcription to become mature mRNA ready for translation.
Recall that one common modification is the addition of a poly-A tail at the 3' end of the mRNA transcript.
Recognize that the poly-A tail is composed of multiple adenine nucleotides added enzymatically.
Note that this tail is important for mRNA stability, nuclear export, and translation efficiency.
Conclude that the tail is made up of adenine nucleotides, not cytosine, uracil, or guanine.
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