-- 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.

Print results.