A pri-mRNA is cleaved within the nucleus by an enzyme called _______ into a shorter,double-stranded,hairpin-shaped precursor called a ________.
A)Drosha,pre-miRNA
B)Drosha,pri-miRNA
C)Dicer,pre-miRNA
D)Dicer,pri-miRNA
E)Slicer,pre-miRNA

Question

Quizplus · Accepted Answer

The pri-mRNA is cleaved by an enzyme called Drosha into a shorter, double-stranded, hairpin-shaped precursor called a pre-miRNA. The correct enzyme and precursor are given in option A, making it the best choice. Option B is incorrect because it incorrectly labels the precursor as pri-miRNA. Option C and D are incorrect because they mention the wrong enzyme for the cleavage. Option E mentions a nonexistent enzyme.

A Pri-MRNA Is Cleaved Within the Nucleus by an Enzyme