Biology A-Level
gene flow
What gene flow means in Biology A-Level, as defined for AQA, OCR.
Definitions of gene flow
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Reference: AQA
Individuals or gametes moving between populations, so that alleles are shared and the two gene pools stay similar.
The exchange of alleles between populations, which stops once two populations no longer interbreed.
Migration between populations that can introduce or remove alleles.
Topics that use gene flow
- Populations (A-level only) (AQA A-Level)
- Patterns of inheritance (OCR A-Level)
Related terms
- genetic drift
- Allele frequencies
- Alleles, genotypes and phenotypes
- Autosomal linkage
- Change in allele frequency over generations
- Chi-squared (χ²) test
- continuous variation
- critical value
Using gene flow in the exam
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