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Explain in Harrdy - Weinberg principle with the help of an algebraic equation.

 

 

 

 
 
 
 
 

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Hardy Weinberg Principle says that allele frequencies in a population are stable and is constant from generation to generation. The gene pool (total genes and their alleles in a population) remains a constant. This is called genetic equilibrium. Sum total of all the allelic frequencies is 1. Individual frequencies, for example, can be named p, q, etc. In a diploid, p and q represent the frequency of allele A and allele a. The frequency of AA individuals in a population is simply p^{2} . This is simply stated in another ways, i.e., the probability that an allele A with a frequency of p appear on both the chromosomes of a diploid individual is simply the product of the probabilities, i.e., p^{2}. Similarly of aa is q^{2} , of Aa 2pq. Hence, p^{2}+2pq+q^{2}=1. This is a binomial expansion of \left ( p+q \right )^{2}.

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