Double-stranded DNA consists of two polynucleotides that are arranged such that the nitrogenous bases within one polynucleotide ... were pursuing a definitive model for the stable structure ...

In the case of DNA and RNA, these monomers are nucleotides. Nucleotides themselves are composed of three distinct parts: sugar, phosphate, and a nitrogenous base. Here's what each of those really ...

Beginning with the body and ending with the atoms that make up a single DNA base, you'll be able to zoom in to 15 different levels to see DNA's relationship to us as a whole. Along the way you'll ...

because it carries the same information as its DNA template but is not used for long-term storage. Each ribonucleotide base consists of a ribose sugar, a phosphate group, and a nitrogenous base.