Which statement about the introns within one gene is correct?
A)These small pieces of DNA form microRNAs that regulate gene expression.
B)They are part of the desert DNA composing the noncoding regions.
C)When expressed, they induce posttranslational modifications.
D)The introns of one gene may be the exons of another gene.

Question

Quizplus · Accepted Answer

Introns are the sectional parts of DNA within a gene-coding region that do not belong to the gene-coding sequence of the protein being synthesized. However, because these introns are in gene-coding regions, they are parts of another gene. In that other gene, they would be considered exons for that gene. Thus, they are not part of the desert DNA and have no role in the synthesis of the gene product for which they are introns.

Which Statement About the Introns Within One Gene Is Correct