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[mass noun] A compound found in living tissue as a constituent base of RNA. In DNA it is replaced by thymine.
- ‘RNA has the same set of four bases, except that instead of thymine, RNA has uracil - commonly referred to as U.’
- ‘He and his group have found that folate deficiency breaks chromosomes due to massive incorporation of uracil into human DNA.’
- ‘Thymine, present in DNA, and uracil, present in RNA, also contribute to this band.’
- ‘Several transformants were obtained by their ability to grow in minimal medium without uracil and uridine but supplemented with arginine.’
- ‘The nitrogen-containing units are the bases: adenine, cytosine, guanine, and uracil.’
Late 19th century: from ur(ea) + ac(etic) + -il.
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