.
(A) shows the old-fashioned depiction of gene expression, summarized as ‘DNA makes RNA makes protein’, the two steps being called transcription and translation. (B) gives a more accurate outline of the events involved in genome expression, especially in higher organisms. Note that these schemes apply only to protein-coding genes. Those genes that give rise to non-coding RNAs are transcribed and processed as shown but the RNAs are not translated.