Genetic Code

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Genetic Code

Genetic Code

  • Tiplet Codes - ensure all amino acids are coded for
  • Codon - sequence of three bases
  • mRNA is formed by a complimentary strand of DNA so it contains a reverse image of the original bases
  • The genetic code is non-overlapping and degenerate
  • Benefits of non-overlapping - a short length of DNA can code for many proteins
  • Benefits of a degenerate code - it protects the DNA from mutations completely disrupting their codes for amino acids.
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Gene Mutations


  • Point mutations - when a single nucleotide is altered
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