Mitosis and Meiosis

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GCSE Biology> Cell activity> Cell division

Mitosis

Meiosis

Ordinary cell division

Reduction cell division

Same number of chromosomes in new cells

Half the number of chromosomes

New cells identical to parent cell

New cells different mix of chromosomes and genes

For growth

For making gametes

For asexual reproduction

For sexual reproduction

In body cells

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.

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