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Chloroplasts in plants and algae contain their own circular DNA genome, which is evidence that: lateral...

Chloroplasts in plants and algae contain their own circular DNA genome, which is evidence that:
lateral gene transfer has occurred from the nucleus to the chloroplast genome.
chloroplasts require specific gene products not found in the nucleus.
chloroplasts arose as endosymbionts.
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The correct answer is chloroplasts arose as endosymbionts. In fact, this is one of the main evidence to support the theory of endosymbiosis which establish that eukaryotic cells emerged from the endosymbiotic relation between two prokaryotic cells. In this context, the prokaryotic cell that was able to accomplish aerobic cell respiration became the mitochondria and those prokaryotic cells with photoreceptors became the chloroplast.

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