The two halves of the divided cells will usually both have mitochondria. Not always, though; sometimes cell division leaves one cell without any mitochrondria.

The two halves of the divided cells will usually both have mitochondria. Not always, though; sometimes cell division leaves one cell without any mitochrondria. That usually results in a non-viable cell, but sometimes the cell can survive with limited capacity. Some species that used to have mitochondria have apparently been through this process and have evolved to survive in their absence; Giardia duodenalis for example.