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🦠 Endosymbiosis

Origin of mitochondria and chloroplasts: free-living bacteria became permanent residents inside host cells. Track genome reduction as genes transfer to host nucleus.

Endosymbiont → Host nucleus
Host-endosymbiont cooperation
Generation: 0
Cells: 0
Avg Endosymbiont Genes: 0
Avg Host Genes: 0
Integration Level: 0%
Organelle Stage: Early
Genome Reduction: As endosymbionts become obligate, genes transfer to host nucleus. Mitochondria retain ~37 genes from original ~1500. This reduction prevents endosymbiont independence, ensuring evolutionary alignment with host.