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Multiple Choice
Which region(s) of a gene are not found within the mature mRNA transcript?
A
Introns
B
3' UTR
C
5' UTR
D
Exons
Verified step by step guidance
1
Understand the structure of a gene: A gene consists of several regions including exons, introns, and untranslated regions (UTRs). Exons are coding sequences, introns are non-coding sequences, and UTRs are non-coding regions found at the ends of the mRNA.
Learn about mRNA processing: During transcription, the entire gene is transcribed into a pre-mRNA, which includes both exons and introns. The pre-mRNA undergoes processing to become mature mRNA.
Identify the role of introns: Introns are non-coding regions that are removed during mRNA splicing. They are not present in the mature mRNA transcript.
Understand the presence of UTRs: The 5' UTR and 3' UTR are retained in the mature mRNA transcript. They play roles in the regulation of translation and stability of the mRNA.
Recognize the role of exons: Exons are coding sequences that remain in the mature mRNA transcript. They are spliced together to form the final coding sequence that will be translated into a protein.