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Biology · L5 · Hardy–Weinberg & Drift Concepts

Decision flowchart mapping evolutionary forces to their expected effect on allele frequency and Hardy–Weinberg equilibrium.

Biology
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Biallelic locus, freq pHWE assumptions met?Genotypes: p², 2pq, q²Stable each generationWhich force?SelectionFitness differences → allele freq changeGenetic driftVar Δp = p(1-p)/2NMutationNew alleles appearGene flowAllele freqs homogenisedNon-random matingExcess homozygotesCoalescent:E[T_MRCA]=2N genYesNo

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