Molecular sequencing suggests that mitochondria arose from a group of prokaryotic organisms within the
A) Crenarchaeota.
B) cyanobacteria.
C) iron-oxidizing bacteria.
D) Proteobacteria.

Question

Quizplus · Accepted Answer

Molecular sequencing studies have shown that mitochondria have a close evolutionary relationship with the Proteobacteria group of bacteria. This relationship is believed to have arisen through an endosymbiotic event where a Proteobacteria-like organism was engulfed and became symbiotic within an ancestral eukaryotic cell.

Molecular Sequencing Suggests That Mitochondria Arose from a Group of Prokaryotic