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GCSE Combined Science · key term
Cell division that produces four genetically different haploid daughter cells, each with half the original number of chromosomes, for sexual reproduction.
Used by AQA and Edexcel
Specification 4.6.1.1, 4.6.1.2 · Paper 2
A type of cell division involved in gamete formation that produces genetically non-identical cells.
Revise: Sexual and Asexual ReproductionTwo types of cell division are important in reproduction: mitosis and meiosis.
A type of cell division in which genetic information is copied and the cell divides twice, producing four genetically different cells with half the original chromosome number.
Explain variation in sexual reproduction by linking meiosis, genetically different gametes and the mixing of genetic information at fertilisation.
For meiosis, link all three outcomes: four cells, a single set of chromosomes in each, and genetic differences between them.
You need the overall sequence and outcomes of meiosis, not the names or detailed features of its stages.
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Paper 1, Paper 2
Revise: Reproduction and DNACells in reproductive organs divide by meiosis to produce gametes. Before division begins, the DNA is copied. The cell then divides twice, producing four daughter cells, each with half the original number of chromosomes.