Mutation requires two Bacteria of equal level and gives one Bacteria of a higher level as a reward. The rarity of the mutated Bacteria is the same as the rarity of the used Bacteria. If they are of different rarities, the mutated Bacteria will have a random rarity in the same range, so it is not possible to obtain a higher rarity Bacteria through mutation.
The default mutation cap is Level 3, which can be raised to Level 4 with '''[[the Ultimate Life Form]]''' tech at the [[Dark Matter Institute]].
'''Main page:''' [[Research#Bacteria Mutations|Bacteria Mutations]].