Ancestral Host Cells
Modern Cells
after many
generations
of evolution
aerobic
bacterium
cyanobacterium
mitochondrion
chloroplast
Which of the following explains why Margulis's endosymbiotic theory is widely accepted today?
A. Mitochondria and chloroplasts have been found free floating near hydrothermal vents in the ocean
B.
Mitochondria and chloroplasts are found in cells of all prokaryotic organisms
C.
Mitochondria and chloroplasts replicate differently than the cells they are found in
D.
Mitochondria and chloroplasts have their own DNA similar to DNA found in bacteria and archaebactena