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Which process involves the removal of non-coding sections from a pre-mRNA molecule during RNA modification and processing?
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10. Transcription
RNA Modification and Processing
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Most mature eukaryotic mRNAs have a string of nucleotides at their 3' end known as a poly-____ tail.
A
A
B
G
C
C
D
T
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Understand that the question is asking about a specific feature found at the 3' end of most mature eukaryotic mRNAs.
Recall that during mRNA processing in eukaryotes, a sequence of nucleotides is added to the 3' end to protect the mRNA and aid in its stability and translation.
Identify that this sequence is known as the polyadenylate tail, commonly called the poly-A tail, which consists of multiple adenine (A) nucleotides.
Recognize that the poly-A tail is important for mRNA stability, nuclear export, and translation efficiency.
Conclude that the correct nucleotide to fill in the blank is 'A', representing adenine, making the term 'poly-A tail'.
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