Question

1. usually, mrnas containing nonsense mutations are only translated once before being recognized and selectively destroyed. the process whereby the faulty mrnas are destroyed is called a. nonsense execution. b. exon - junction complex. c. nonsense - mediated decay (nmd). d. splicing. e. answers d and d are correct.

Explanation:

Nonsense - mediated decay (NMD) is a process that recognizes and selectively destroys mRNAs containing nonsense mutations. These faulty mRNAs are translated once before being destroyed. Splicing is related to the processing of pre - mRNA but not the destruction of mRNAs with nonsense mutations. Exon - junction complex is involved in the surveillance mechanism related to NMD but is not the name of the process of destruction. Nonsense execution is not a relevant term here.

Answer:

c. nonsense - mediated decay (NMD)