1. The last stage of the cell cycle is called cytokinesis!
2. I believe this is called a histone. If not, try chromatin!
When both daughter cells are the same cell type, this is called symmetric division. That's true whether they continue being stem cells or become something new. When one cell stays a stem cell and the other differentiates, it's called asymmetric division. This happens about 30 percent of the time.
Higher animals and plants most likely have oogametes