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Multiple Choice
Which of the following is not a part of RNA processing in eukaryotes?
A
Polyadenylation
B
DNA replication
C
5' capping
D
RNA splicing
Verified step by step guidance
1
Understand that RNA processing in eukaryotes involves several key modifications to the pre-mRNA transcript before it becomes mature mRNA.
Identify the main steps of RNA processing: 5' capping, polyadenylation, and RNA splicing.
5' capping involves the addition of a modified guanine nucleotide to the 5' end of the pre-mRNA, which is crucial for mRNA stability and initiation of translation.
Polyadenylation is the addition of a poly-A tail to the 3' end of the pre-mRNA, which also aids in stability and export from the nucleus.
RNA splicing involves the removal of introns (non-coding regions) and joining of exons (coding regions) to produce a continuous coding sequence. DNA replication is not part of RNA processing; it is a separate process involved in copying DNA before cell division.