A concise lesson on meiosis as reduction division. It explains why gametes need half the number of chromosomes, shows the two divisions using mouse testes as an example, and then looks at what happens when division goes wrong, using Down’s syndrome as a case study.
What this presentation covers
- why meiosis is needed
- production of gametes
- the first and second divisions
- meiosis in mouse testes
- division errors and non disjunction
- trisomy 21 (Down’s syndrome)
Level: GCSE
Slides: 9
Format: PowerPoint (.pptx)