๐Ÿงฌap biology review

Uracil

Written by the Fiveable Content Team โ€ข Last updated August 2025
Verified for the 2026 exam
Verified for the 2026 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated August 2025

Definition

Uracil is a nitrogenous base found only in RNA. It replaces thymine from DNA and pairs with adenine.