MGY377H1 Lecture Notes - Lecture 9: Tyrosine, Cyanobacteria, Wolbachia
1 Feb 2018
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Document Summary
Vertical gene transfer is a very rapid way to evolve. These bacteria permently reside inside another cell, and their genomes are very, very small. They reduce their genome down nly to genes required for the relationship they are very high specialists. They very rarely do genetic exchanges because they are sequestered within another cell. The smallest bacterial genomes are at rich, the smallest ones are around 160 000 basepairs, which is. They are widespread in insects, 15% of insects have endosymbionts. The bacteria are internally inherited, thus the baby inscects inherit the bacteria from its mother. 50-100 million years ago, salmonella diverged from e coli. At the same time, very close relatives established endosymtiotic relationships with insects. The bacteria in the relationships got rid of the majority of their genomes, their gnomes are very small. these relationships were not around in disnosaurs. The insect has a larval stage and an adult stage.
