Heredity Unit
Notes 1/6/09
Mitosis – the process in which a cell produces two identical nuclei.
Chromosome – a string – like structure in cells that carries information controlling all
the cell’s activities.
The Five Steps of Mitosis
Step 1: Interphase – Each chromosome makes an exact copy of itself.
Step 2: Prophase – The nuclear membrane disappears and the chromosomes attach each
other.
Step 3: Metaphase – Chromosomes line up in the middle of the cell.
Step 4: Anaphase – Chromosomes split to the opposite sides of the cell.
Step 5: Telophase – Nuclear membrane reappears and the cell begins to split.
Cell Division – is the process in which a cell divides into two daughter cells.