Which of the following correctly describes exons and introns?
A) Both exons and introns code for proteins, but they code for different types of proteins.
B) Exons are coding sections of DNA and introns are noncoding sections.
C) Exons are noncoding sections of DNA and introns are coding sections.
D) In order to code for a protein both an exon and an intron are necessary.

Question

Quizplus · Accepted Answer

Exons are the coding regions of DNA that contain the genetic information to create proteins, while introns are noncoding sections of DNA that do not contain protein-coding information. Therefore, choice B accurately describes the difference between the two. Choices A, C, and D are incorrect.

Which of the Following Correctly Describes Exons and Introns