What are the two lines of evidence that support the Endosymbiotic Theory for the origin of chloroplasts?

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The Endosymbiotic Theory suggests that chloroplasts (and mitochondria) originated from free-living bacteria that were engulfed by ancestral eukaryotic cells. The evidence supporting this theory includes the fact that chloroplasts divide by binary fission, similar to bacteria, and they contain their own DNA, which is also a characteristic of bacteria. These features are distinct from the rest of the eukaryotic cell components, supporting the idea that chloroplasts have a prokaryotic origin.

What Are the Two Lines of Evidence That Support the Endosymbiotic