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Evolution

anges of gene frequencies in population were not realized. Following this "rediscovery" of Mendel, four scientists independently, almost simultaneously contrived the Hardy-Weinberg principal (named after two of the four scientists) which initiated the science of population genetics: exploration of the statistical repercussions of the principle of inheritance as devised by Mendel. Read concisely the Hardy-Weinberg principle might be stated as follows: Alternate paradigms of genes in ample populations will not be modified proportionately as per successive generation, unless stimulated by mutation, selection, emigration, or immigration of individuals. The relative proportion of genotypes in the population will also be maintained after one generation, should these conditions be negated or mating is random24.Through application of the Hardy-Weinberg principle the precise conditions under which change does not occur in the frequencies of alleles at a locus in a given population (group of individuals able to interbreed and produce fertile offspring) can be formulated: the alleles of a locus will be at equilibrium. A species may occur in congruous correspondence with its population counterpart, or may consist of several diverse populations, physically isolated from one another25. In accordance with Mendelian principle, given two heterozygous alleles A and B, probability of the offspring retaining prominent traits of either parent (AA or BB) is 25 percent, probability of retaining half the traits of each parent (AB) is 50 percent. Thus allele frequencies in the offspring parallel those of the parents. Likewise, given one parent AB and another AA, allele frequencies would be 75 percent A and 25 percent B, while genotype frequencies would be 50 percent AA and 50 percent AB - the gametes generated by these offspring would also maintain the same ratio their parents initiated (given, of course a maximum of two alleles at each locus). In true-to-life ...

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