The genetic code uses a triplet non-overlapping and degenerate code to encode proteins. A gene is a sequence of DNA bases that codes for a sequence of amino acids in a polypeptide chain. The genetic code uses triplets of bases to encode amino acids in a way that some codons code for the same amino acid, making the code redundant.

1. The genetic code
Chapter 2B

2. Learning objectives
• Understand the nature of the genetic code as
a triplet code which is non-overlapping and
degenerate.
• Know that a gene is a sequence of bases on a
DNA molecule that codes for a sequence of
amino acids in a polypeptide chain.

4. Triplet code
• The code of three bases that is the basis of the
genetic information in the DNA.

9. A non-overlapping code

10. Point mutation

11. A degenerate code(redundant)