-- more times:

1. Clone the genome to start mutating it.
2. Roll to find the nucleotide to mutate.
   • If the roll is between 1 through 18, inclusive, select that nucleotide.
   • Otherwise, skip mutation and clone the genome again.
3. Select the rolled nucleotide in the sequence.
4. Roll to see what kind of mutation to perform.
5. Depending on the roll:
   • If the roll is between 1 through 14, inclusive, perform a transition on the selected nucleotide.
   • If the roll is between 15 through 17, inclusive, perform a complementing transversion on the selected nucleotide to the base it pairs with.
   • Otherwise, perform the other transversion on the selected nucleotide.
6. Select the correct amino acid for the new codon.
7. Depending on the change to the codon:
   • If the mutation caused a change in the amino acid being coded, mark this mutation as lethal, and start over with the genome from the previous iteration.
   • Otherwise, mark the mutation as non-lethal, and continue with this new genome.

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