DNA changes account for differences between individuals. However, they can also cause medical problems such as [[cancer]]
DNA is [[transcription|transcribed]] into [[mRNA]], which is in turn being [[translation|translated]] into [[proteins]] built from individual [[amino acids]]. Additionally, DNA maybe transcribed into functional RNAs (ribosomal and transfer RNA) that do not undergo translation. [[RNA]] can also be reverse-transcribed back into DNA, which is the called [[Complimentary DNA]] or [[cDNA]].
==DNA fingerprinting==