Small nuclear RNAs such as U1, U2 and U5 affect gene expression by
A) diminishing the rate of transcription.
B) functioning as modified bases within tRNA.
C) functioning as self-catalytic components of rRNA.
D) functioning as essential components of the spliceosome.
E) promoting proper transcription termination.

Question

Quizplus · Accepted Answer

Small nuclear RNAs U1, U2 and U5 function as essential components of the spliceosome, which is responsible for removing introns and splicing exons together to form mature mRNA. Therefore, they play a crucial role in regulating gene expression by influencing mRNA splicing.

Small Nuclear RNAs Such as U1, U2 and U5 Affect