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# Hardy Weinberg EQs ### Hardy-Weinberg Equations Overview - Two key equations for population genetics - p + q = 1 (allele frequencies) - p² + 2pq + q² = 1 (genotype frequencies) - p = dominant allele frequency, q = recessive allele frequency - p² = homozygous dominant, 2pq = heterozygous, q² = homozygous recessive - Only works for genes with two alleles - Blood groups exception: can use if only 2 of 3 alleles present in population ### Problem-Solving Method - Dominant