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Class 12th Biology 2018 Set1 Delhi Board Paper Solution

Question 7

With the help of an algebraic equation, how did Hardy-Weinberg explain that in a given population the frequency of occurrence of alleles of a gene is supposed to remain the same through generations? 


Hardy-Weinberg Equation: The allele frequencies in a population are stable and is constant generation to generation.Sum total of all the allelle frequencies is 1.

ie. p2 + 2pq + q2 = 1  (where p and q are frequency of Allele A and a)

In population genetic studies, the Hardy-Weinberg equation can be used to measure whether the observed genotype frequencies in a population differ from the frequencies predicted by the equation.

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