Among current bacteria, those with the most in common with mitochondria are the Rickettsia (that cause typhus). What does this mean about Rickettsia's place in the evolution of endosymbiosis?
What will be an ideal response?
Because Rickettsia more closely resembles mitochondria compared to other bacteria, this may indicate that Rickettsia is a less-derived, ancestral bacterial species. It could also indicate that a close relative to Rickettsia gave rise to the symbiotics that ultimately became mitochondria.
Biology & Microbiology
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Biology & Microbiology