posted by Mengistu .
Why mitochondrion and mitotic division are absent in prokaryotic cells?
The mitochondria evolved in eukaryotic cells from a symbiotic relationship with prokaryotic cells; prokaryotic cells do not have a mitochondria because in a sense, they are mitochondria. Prokaryotic cells divide by binary fission, which is similar to mitosis. However, prokaryotic cells do not have a nucleus and thus can not form spindle fibers, which are needed to undergo mitosis.