Part 1: Mitosis in Brief

Mitosis is the process in which one body cell divides to make two genetically identical cells. Each new cell has the same number of chromosomes as the original cell. Mitosis helps organisms grow, replace old cells and repair damaged tissue.

Word Bank

anaphase   chromosomes   identical   metaphase   prophase   telophase

Sequence the Four Main Stages

Use the word bank to name each stage. Then write numbers 1–4 to show the correct order.

Part 2: Check Your Understanding

Answer Key

Sequencing activity: Metaphase = 2, Prophase = 1, Telophase = 4, Anaphase = 3.

1. Two genetically identical cells.

2. Metaphase.

3. Chromosome – a structure containing genetic information; Identical – exactly the same; Nucleus – the control centre of a cell.

4. Chromosomes must be copied so each new cell receives a complete and identical set of genetic information.

5. Mitosis makes new cells for growth and replaces cells that are old, damaged or lost during repair.