Cell Division

  • Mitosis
  • Meiosis
  • Fertilisation
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  • Created by: Natasha
  • Created on: 12-04-11 15:07

Mitosis

Mitosis is the division of body cells to produce new cells.

Mitosis occurs:

  • for growth
  • for repair
  • in asexual reproduction

Before the cell divides, a copy of each chromosome is made.

The new cell contains exactly the same genetic information as the parent cell:

eg. the same number of chromosomes and the same genes.

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Meiosis

It occurs in the testes and ovaries.

Cells in these organs divide to produce the gametes for sexual reproduction

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Fertilisation

During fertilisation, both gametes join.

One chromosome comes from each parent.

A single body cell with new pairs of chromosomes is formed. 

The cells divides repeatedly by mitosis to form a new individual. = variation 

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Comments

Harpreet Bhamra

Thanks this was really helpful!

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