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Definitions for Rna

[1] ribonucleic acid: any of a class of single-stranded molecules transcribed from DNA in the cell nucleus or in the mitochondrion or chloroplast, containing along the strand a linear sequence of nucleotide bases that is complementary to the DNA strand from which it is transcribed: the composition of the RNA molecule is identical with that of DNA except for the substitution of the sugar ribose for deoxyribose and the substitution of the nucleotide base uracil for thymine.
[2] biochem ribonucleic acid; any of a group of nucleic acids, present in all living cells, that play an essential role in the synthesis of proteins. On hydrolysis they yield the pentose sugar ribose, the purine bases adenine and guanine, the pyrimidine bases cytosine and uracil, and phosphoric acid See also messenger RNA, transfer RNA, ribosomal RNA, DNA

Words related to Rna

heredity, gene, chromosome

Origin of Rna

First recorded in 1945–50

Synonyms for Rna

chromosome, gene, heredity, genetic code, nucleic acid