Related Words

Uracil: The pyrimidine that replaces thymine in RNA molecules and nucleotides.

Nucleotide: A molecule which is a basic building block of nucleic acids and which plays a key role in energy transfer in biochemical reactions. Nucleotides consist of a five-carbon sugar, a heterocyclic . . . View Full Definition

Base Sequence: A partnership of organic bases found in dna and rna: adenine forms a base pair with thymine (or uracil) and guanine with cytosine in a double-stranded nucleic acid molecule.

Nucleotide Base: A heterocyclic nitrogen-containing base that is a constituent of nucleotides. Examples are adenine, guanine, thymine, uracil, and cytosine.

Ribonucleic Acid (RNA): Nucleic acid containing ribose sugar and the base Uracil; RNA functions in protein synthesis. The single starnded molecule transcribed from one strand of the DNA. There are three types of RN . . . View Full Definition

Thymine: One of the pyrimidine bases in DNA, thymine is replaced by uracil in RNA.

Pyrimidine: One of the groups of nitrogenous bases that are part of a nucleotide. Pyrimidines are single ringed, and consist of the bases thymine (in DNA), uracil (replacing thymine in RNA), and cytosine.