1. Meiosis Learning Objectives:
Wednesday, 28 November 2018
Meiosis
Learning Objectives:
1. Explain how gametes are made by meiosis
2. Describe differences and similarities between mitosis and meiosis
Starter
Draw and label a sperm and egg cell in your book – don’t look back in your book! 

2. Meiosis A special type of cell division producing gametes
Happens in primary sex organs
Ovaries and testes
Gametes contain half the number of chromosomes. This is called haploid
Meiosis results in variation

3. Stages of meiosis

4. 2 Main stages
Homologous chromosomes separated. Creates 2 daughter nuclei
2 daughter nuclei divide. Chromosomes themselves are seperated. Creates 4 gametes.

5. Similarities and differences between meiosis and mitosis
Where does it occur
All over the body
Sex organs
Number of divisions 1 2
Creates
All cells apart from gametes
Gametes
Number of chromosomes
46 (diploid)
23 (haploid)
Produces
Two cells
Four cells
Function
Cellular reproduction, growth
Sexual reproduction