Which of the following statements is true of miRNAs?
A) They are about 100-200 nucleotides long.
B) They have no medical importance.
C) They promote the translation of mRNA to protein.
D) They promote the degradation of mRNA.

Question

Quizplus · Accepted Answer

miRNAs (microRNAs) are short, non-coding RNA molecules that are about 20-22 nucleotides long. They bind to complementary sequences on mRNA molecules and promote their degradation, thus inhibiting translation into proteins. miRNAs play important roles in gene regulation and have significant medical importance, with dysregulation of miRNA expression implicated in a variety of diseases.

Which of the Following Statements Is True of MiRNAs