🧬ap biology review

Exons

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

Exons are the sections of DNA that are transcribed into mRNA and then translated into proteins. They contain the actual genetic information coding for protein synthesis.