If photosynthesis were mapped on a prokaryotic phylogenetic tree, all photosynthetic groups would have a single common ancestor.

Name: If photosynthesis were mapped on a prokaryotic phylogenetic tree, all photosynthetic groups would have a single common ancestor.
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Photosynthesis has evolved independently in multiple prokaryotic groups, such as cyanobacteria, proteobacteria, and chloroflexi. Therefore, they would not all have a single common ancestor on a prokaryotic phylogenetic tree.

If Photosynthesis Were Mapped on a Prokaryotic Phylogenetic Tree, All