In cats, a gene for hair length has a dominant allele for short hair, HHH, and a recessive allele for long hair, hhh.
A population of cats contains 36%36\%36% short-haired cats.
Use the Hardy–Weinberg equation to calculate the percentage of cats heterozygous for gene HHH.
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23 exam-style questions on AQA A Level Biology Populations (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.