Which additional piece of evidence best supports the theory illustrated in the accompanying figure? A prokaryotic host cell takes in anaerobic bacteria and photosynthetic bacteria, developing a symbiotic relationship.

The results of the Miller-Urey experiment
The discovery of fossilized stromatolites
Fossilized tetropods dating back 365 million years
The presence of DNA and ribosomes in some organelles

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

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genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

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