# Cell division

Source: https://projectgcse.co.uk/biology/life_processes_cell_activity/cell_division_mitosis_meiosis

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#### **Mitosis**

- Ordinary cell division
- Same number of chromosomes in new cells
- New cells identical to parent cell
- For growth
- For asexual reproduction
- In body cells

#### **Meiosis**

- Reduction cell division
- Half the number of chromosomes
- New cells different mix of chromosomes and genes
- For making gametes
- For sexual reproduction
- In reproductive organs

Chromosomes are threads of DNA which carry the genetic material (genes). In humans there are 23 pairs of chromosomes. In sex chromosomes there are only half the number.