why-is-uracil-used-in-rna-instead-of-thymine-which-is-used-in-dna

Question

Why is uracil used in RNA instead of thymine, which is used in DNA?

Accepted Answer

Uracil is energetically less costly to produce than thymine.

Answer

Uracil is more stable than thymine in RNA.

Answer

Uracil allows RNA to form more complex structures.

Answer

Uracil can form more hydrogen bonds than thymine.