The five phases of mitosis and cell division tightly coordinate the movements of hundreds of proteins. How did early biologists unravel this complex dance of chromosomes? The most obvious ...

Interphase The cell spends most of its life in this phase. The DNA in chromosomes copies itself ready for mitosis. Prophase The DNA in chromosomes and their copies condenses to become more visible.

With only half the DNA, when the parent cell combines with another parent ... Others cells in your body contain 46 chromosomes: 23 from your father and 23 from your mother. Your egg (or sperm ...