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GCSE Combined Science · key term
All the alleles present in a population.
Used by AQA and Edexcel
Specification 4.6.2.3 · Paper 2
Revise: Selective BreedingRelatives are genetically similar, so repeatedly breeding them can reduce the variety of alleles—the different versions of genes—in the population’s gene pool.
Paper 1, Paper 2
The gene pool is all the alleles in a population; if fewer different alleles remain, the population has a less varied gene pool.
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