DNA is a code which allows cells to produce specific proteins – every cell has the same DNA but they can produce different proteins.
Definitions
Histones are proteins found in chromatids, this forms chromosomes
Exons are the coding parts of DNA – they code for proteins
Introns are the non-coding regions of DNA
Degenerate means that most amino acids are coded for by more than one triplet
Non-overlapping means that each base of the sequence is only read once
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