So how does protein synthesis make hair? If you've looked at the activity (or even the text version of the activity), you know how a section of DNA instructs a cell how to make a protein.

This process of protein synthesis occurs in two stages - transcription and translation. When a gene is to be expressed, the base sequence of DNA is copied or transcribed into mRNA (messenger RNA).

Why is this definition now considered overly simplistic ... breaks apart and then re-forms itself at certain points in protein synthesis. Specifically, the sections of DNA that encode protein ...