Which of the following is the hardy-weinberg equation? p2 + 2pq + q2 = 1.0 p2 + q2 = 1.0 p2 + 2pq + q2 = 0 p2 - 2pq + q2 = 1.0 p2 - q2 = 1.0

Answer is p2 + 2pq + q2 = 1.0

To find out the frequency of occurrence of alleles of a gene in a population Hardy-Weinberg’s principle is used. According to Hardy-Weinberg’s principle the allele frequencies in a population are stable and is constant over generations. The total genes and their alleles in a population remains a constant. Then this is called genetic equilibrium. Sum total of all the allelic frequencies is 1.

Hardy-Weinberg’s equation expressed as p2+2pq+q2=1 This is a binomial expansion of (p+q)2. When frequency measured, differs from expected values, the difference (direction) indicates the extent of evolutionary change.

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