Multiple Choice
Which description applies to alternative mRNA splicing?
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15. Gene Expression
Eukaryotic RNA Processing and Splicing
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Which of the following processes occurs in eukaryotic gene expression?
A
mRNA, tRNA, and rRNA are translated.
B
A cap is added to the 5′ end of the mRNA.
C
Adenine nucleotides are added to the 5' end of the mRNA.
D
RNA polymerase requires tRNA to elongate the molecule.
Verified step by step guidance1
Understand that eukaryotic gene expression involves several key processes, including transcription and RNA processing.
During transcription, the DNA sequence of a gene is transcribed to produce a primary RNA transcript.
In eukaryotes, this primary RNA transcript undergoes several modifications before becoming mature mRNA. One of these modifications is the addition of a 5' cap.
The 5' cap is a modified guanine nucleotide added to the 5' end of the mRNA. This cap is crucial for mRNA stability and initiation of translation.
Recognize that the addition of a 5' cap is a specific process in eukaryotic gene expression, distinguishing it from other processes like translation, which involves mRNA, tRNA, and rRNA.
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