Bacteria Evolution is the first research available in the game. There are seven types of Bacteria Evolution, which are unlocked as you destroy more planets.
Each Bacteria Evolution research type has a chance to discover one Level 1 Evolved Bacteria. The droprates of different rarity Bacteria depend on the selected research type.
Only one type of Bacteria Evolution can be researched at a time.
With Genome Corruption
If you have Genome Corruption, droprates for higher rarity Bacteria are improved significantly.
Research Types (before 1.8.0)
• Changed icons for Natural Selection and Genetic Load