試題詳解

61. Noncoding RNAs play multiple roles in regulating gene expression. Which of the following statements about noncoding RNA is correct? a) noncoding RNAs include microRNAs, piwi-interacting RNAs, mRNAs, and long noncoding RNAs, b) noncoding RNAs can be translated into polypeptides, c) long noncoding transcript of XIST is essential for condensation of heterochromatin, d) microRNA-protein complexes recognize target mRNA and block its translation, e) piwi-interacting RNAs play an indispensable role in germ cells of animal species.
(A) abc
(B) bcd
(C) bcde
(D) acde
(E) cde