When one studies cell division, usually the process is explained through what happens with the DNA of the cell, particularly, that in eukaryotes the nucleus dissolves. But what happens to the rest of the organelles? I read here what happens to the ER and Golgi complex, in particular I'm wondering what happens to the mitochondria, in which part does it reproduces? do they make a parallel process? or do they get dissolved?
$%--------- %I started wondering about this because I was reading Lynn Margulis' article _Bacterial Bedfellows_, and it baffles me that in such little time an organism can just coexist with an attacker and turn it in a _good relationship_, how ever it's not clear to me how cell reproduction might work in those cases.$