Hardy weinberg law applicable for maintenance of genetic purity of
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In this article we will discuss about the Hardy-Weinberg law with its applications.
In 1908, the mathematician G. H. Hardy in England and the physician W. Weinberg in Germany independently developed a quantitative theory for defining the genetic structure of populations. The Hardy-Weinberg Law provides a basic algebraic formula for describing the expected frequencies of various genotypes in a population.
The similarity of their work however, remained unnoticed until Stern (1943) drew attention to both papers and recommended that names of both discoverers be attached to the population formula. The Law states that gene frequencies in a population remain constant from generation to generation if no evolutionary processes like migration, mutation, selection and drift are operating.
Hardy Weinberg Principal is the principal of genetic equilibrium. Here the gene frequency remains constant from generation to generation and become stable after few generations. This is called genetic equilibrium. The formula is p2 + 2pq + q2.which is the binomial expansion of (p+q)2. This can be applied to any population to find out the gene frequency of that population. Here P and Q are the particular gene gene frequency.