Biology 2581B Lecture Notes - Lecture 3: Shapeshifting, Phylogenomics, Cytoskeleton
10 May 2016
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Document Summary
Although both the chloroplast and the mitochondria are found within eukaryotic cells, they show characteristic of prokaryotic cells. Believe that both organelles are descendants of bacteria that fused with the earliest nucleated cell. Mitochondria & chloroplast carry their own dna & genomes these genomes only encore for speci c proteins hat are required for the organelle"s speci c functions. B starts providing bene cial functions to a, or vice versa. The relationship develops stronger over time symbiotic relationship. But at this point in time, the endosymbiont can still survive out side of the host, should it be expelled. The endosymbiont still retains the gene within its genome that allows it to be an free-living, independent organism (3) endosymbiotic gene loss. Endosymbiotic gene loss: the result of gene loss when the endosymbiont suffers a random mutation in its genome that causes it to lose the gene that allows it to live as an independent free-living organism.
