Multiple Choice
Which process can produce multiple transcripts from the same gene in eukaryotes?
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15. Gene Expression
Eukaryotic RNA Processing and Splicing
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Which of the following processes correctly describes alternative RNA splicing?
A
The removal of introns and joining of exons in different combinations to produce multiple mRNA variants from a single gene.
B
The addition of a 5' cap and poly-A tail to stabilize the mRNA molecule.
C
The degradation of mRNA molecules that are no longer needed by the cell.
D
The conversion of RNA into DNA through reverse transcription.
Verified step by step guidance1
Understand that alternative RNA splicing is a process that occurs during the post-transcriptional modification of pre-mRNA in eukaryotic cells.
Recognize that the primary function of alternative RNA splicing is to allow a single gene to produce multiple mRNA variants, which can lead to the production of different proteins.
Identify that during alternative RNA splicing, introns (non-coding regions) are removed, and exons (coding regions) are joined together in various combinations.
Differentiate alternative RNA splicing from other processes such as the addition of a 5' cap and poly-A tail, which are involved in mRNA stabilization, not splicing.
Eliminate options that describe processes unrelated to splicing, such as mRNA degradation or reverse transcription, to focus on the correct description of alternative RNA splicing.
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