RNA Definition

What Is RNA?

RNA Molecule
RNA Molecule. LAGUNA DESIGN, Getty Images

RNA Definition

RNA is the acronym for ribonucleic acid. Forms of RNA include messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). RNA codes for amino acid sequences, which may be combined to form proteins. Where DNA is used, RNA acts as an intermediary, transcribing the DNA code so that it can be translated into proteins.

RNA Examples

There are 3 main types of RNA:

  • transfer RNA or tRNA
  • messenger RNA or mRNA
  • ribosomal RNA or rRNA