Biology A-Level
Hardy–Weinberg principle
What Hardy–Weinberg principle means in Biology A-Level, as defined for OCR.
Definition of Hardy–Weinberg principle
Check what you remember
Read the wording for your board, then hide it and explain Hardy–Weinberg principle in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Models allele and genotype frequencies in an idealised population that is large, randomly mating, with no mutation, no migration and no selection.
Topics that use Hardy–Weinberg principle
- Patterns of inheritance (OCR A-Level)
Related terms
- Allele frequencies
- Alleles, genotypes and phenotypes
- Autosomal linkage
- Change in allele frequency over generations
- Chi-squared (χ²) test
- continuous variation
- critical value
- Crossing over and independent assortment
Using Hardy–Weinberg principle in the exam
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