Biology (11th Grade)
Transcription and RNA Processing (Section 12.4)
What is a possible evolutionary or regulatory function of introns?
They allow different mRNAs to result from one segment of DNA by letting exons combine in various combinations.
They act as hydrolytic enzymes to degrade older mRNA molecules.
They translate directly into amino acids to build structural proteins.
They act as a promoter to begin the transcription cycle.
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