Many eukaryotic and some prokaryotic genes have their coding regions interrupted by introns (intervening sequences). These intronic sequences are removed
A) during translation.
B) from messenger RNA by polyadenylation.
C) from genomic DNA by nucleases.
D) from heterogeneous nuclear RNA through a process called splicing.
E) from transfer RNA by charging which involves amino acids.

Question

Quizplus · Accepted Answer

Intronic sequences are removed from pre-mRNA (also known as heterogeneous nuclear RNA) by a process called splicing, which results in the formation of mature mRNA that can then undergo translation to produce a functional protein. Introns are not removed during translation, polyadenylation is the addition of a poly-A tail to the 3' end of mRNA and does not affect introns, and nucleases are involved in the degradation of DNA and RNA but not specifically in the removal of introns. Transfer RNA does not typically contain introns.

Many Eukaryotic and Some Prokaryotic Genes Have Their Coding Regions