and a nitrogenous base. Adjacent ribose nucleotide bases are chemically attached to one another in a chain via chemical bonds called phosphodiester bonds. Unlike DNA, RNA is usually single-stranded.

Kossel isolated cytosine from calf thymus tissues and found that it was a component of nucleic acids. This discovery, along with the identification of other nitrogenous bases, laid the foundation for ...

This process is called elongation. Three of the four nitrogenous bases that make up RNA — adenine (A), cytosine (C), and guanine (G) — are also found in DNA. In RNA, however, a base called ...

A second pyrimidine, called thymine (T), only occurs in DNA, while the third type, uracil (U), only occurs in RNA. Nitrogenous bases are used when writing out genetic code. Gene codes are broken ...

It is a polymeric molecule composed of nucleotides, each containing a ribose sugar, a phosphate group, and one of four nitrogenous bases: adenine (A), uracil (U), guanine (G), or cytosine (C). RNA is ...

Three of these four nitrogenous bases—adenine, cytosine, and guanine—are also found in DNA. While DNA contains thymine, RNA includes uracil. RNA is key to the majority of biological processes ...