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AP Biology/Unit 2: Cell Structure and Function
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Endosymbiotic Theory of Eukaryotic Evolution

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Which statement best describes the primary contribution of the endosymbiotic theory to the modern understanding of cellular evolution?

A

It has demonstrated that cellular evolution occurs only through random mutations

B

It has provided a framework for understanding the origin of complex cellular structures and the interconnectedness of life

C

It has shown that all eukaryotic organelles evolved from endosymbiotic events

D

It has disproven the existence of prokaryotic cells in modern ecosystems

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