Biology 2581B Chapter Notes - Chapter David Smith Articles on Evolution: Horizontal Gene Transfer, Intracellular Parasite, Archaea
4 Jun 2017
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Document Summary
Eukaryotes are archaebacterial chimeras: evolved mitochondria through endosymbiosis. Viruses are obligate intracellular parasites and require a host. Endosymbiosis: mitochondria is from bacteria own genome, translation system. Eukaryotes seemed to have just popped out of nowhere. Symbiotic relationship interaction resulted in genes of both archaeal host and bacteria provenance: genetically chimaeric before symbiosis, mitochondria from alpha proteobacteria. Mito late model: less popular and maybe false model. Syntrophic interaction: one species lives off the products of another: host cell membrane to the mitochondrial membrane. Early theory more commonly believed since need to develop some mechanics to engulf bacteria first. Note: nucleus holds more genetic information than bacteria and archaeabacteria. Limitations: only 2 species where bacteria live in other bacteria, eukaryotes have a lot of species where bacteria live inside. Evidence: giardia are just missing mitochondria, but actually false evidence actually just lost mitochondria through evolution.
