Combined Science GCSE
Gametes
What Gametes means in Combined Science GCSE, as defined for AQA.
Definitions of Gametes
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Reference: AQA
Sex cells such as sperm and eggs in animals, or pollen and eggs in flowering plants, each receiving a single set of chromosomes.
These are produced by meiosis and have half the normal chromosome number, such as 23 single chromosomes in humans.
Each carries one allele of each gene, and fertilisation combines two gametes at random.
Carry one sex chromosome, with all eggs carrying X and sperm carrying either X or Y.
Cells produced by meiosis, each with half the chromosome number of the parent cell.
Sex cells like sperm, eggs and pollen, which receive a single set of chromosomes.
Topics that use Gametes
- Meiosis (AQA GCSE)
- Sex determination (AQA GCSE)
- Sexual and asexual reproduction (AQA GCSE)
- Variation (AQA GCSE)
Related terms
- Meiosis
- Fertilisation
- Genetic variation
- Zygote
- Cell differentiation
- Cell specialisation and adaptation
- combination of genes and the environment
- Determine phenotype
Using Gametes in the exam
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