Uracil - Wikipedia
So cells continue to use uracil in RNA, and not in DNA, because RNA is shorter-lived than DNA, and any potential uracil-related errors do not lead to lasting damage.

What Is Uracil and What Does It Do in RNA? - Biology Insights
Uracil is a fundamental organic molecule and one of the four primary building blocks, or nucleobases, of Ribonucleic Acid (RNA). It is a nitrogen-containing compound that plays a crucial part in translating genetic information into functional components of the cell.

Uracil | Nucleobase, Nucleoside & DNA | Britannica
uracil, a colourless, crystalline organic compound of the pyrimidine family that occurs as a component of ribonucleic acid (RNA), a molecule involved in the transmission of hereditary characteristics.

Uracil - National Human Genome Research Institute
Uracil (U) is one of the four nucleotide bases in RNA, with the other three being adenine (A), cytosine (C) and guanine (G). In RNA, uracil pairs with adenine. In a DNA molecule, the nucleotide thymine (T) is used in place of uracil.

Uracil - New World Encyclopedia
Uracil is used in animals and plants to help carry out the synthesis of many enzymes necessary for cell function through bonding with riboses and phosphates (Garrett and Grisham). Uracil serves as an allosteric regulator and coenzyme for reactions in the human body and in plants (Brown 1998).

Uracil Definition and Examples - Biology Online Dictionary
Uracil is similar to thymine in terms of structure except for the methyl group at position 5 in the heterocyclic aromatic ring that present in thymine. It has a chemical formula of C 4 H 4 N 2 O 2.

Uracil - NIST Chemistry WebBook
Uracil Formula: C 4 H 4 N 2 O 2 Molecular weight: 112.0868 IUPAC Standard InChI: InChI=1S/C4H4N2O2/c7-3-1-2-5-4 (8)6-3/h1-2H, (H2,5,6,7,8) Copy

Uracil, What is Uracil? About its Science, Chemistry and Structure
Uracil is one of the four nucleobases in the nucleic acid RNA that are represented by the letters A, G, C and U. The others are adenine (A), cytosine (C), and guanine (G).

Uracil - an overview | ScienceDirect Topics
Uracil - an overview | ScienceDirect Topics

50 Facts About Uracil
Uracil is one of the four nucleobases in RNA, replacing thymine found in DNA. This small but mighty molecule plays a crucial role in the coding, decoding, and expression of genes.