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Notes on Simulating Evolution’s First Steps

Symbiosis:

• Given: organism needs B to replicate
• Given: A is abundant

1. Organism1, which can convert A to B has an advantage
2. In this new environment, Organism2 which can take advantage of Organism1's B has an advantage.
3. In this new environment, Organism1.1 which doesn't share B has an advantage.
4. In this new environment, Organism2.1 which gives something back to A will give Organism1 an advantage.
5. By giving Organism1 a selective advantage, it is helping maintain its own food source, giving itself an advantage.