Hardy Weinberg - The Hardy-Weinberg Law The unifying...

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The Hardy-Weinberg Law The unifying concept of population genetics is the Hardy-Weinberg Law (named after the two scientists who simultaneously discovered the law). The law predicts how gene frequencies will be transmitted from generation to generation given a specific set of assumptions. Specifically, If an infinitely large, random mating population is free from outside evolutionaryforces (i.e. mutation, migration and natural selection), then the gene frequencies will not change over time and the frequencies in the next generation will be p 2 for the AA genotype, 2 pq for the Aa genotype and q 2 for the aa genotype. Let's examine the assumptions and conclusions in more detail starting first with the assumptions. Infinitely large population - No such population actually exists, but does this necessarily negate the Hardy-Weinberg Law? NO!! The effect that is of concern is genetic drift. Genetic drift is a change in gene frequency that is the result of chance deviation from expected genotypic frequencies. This is a problem in small population, but is minimal in moderate
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This note was uploaded on 03/06/2011 for the course BIOL 100B taught by Professor Nargesshassanzadeh-kiabi during the Winter '08 term at California State University Los Angeles .

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Hardy Weinberg - The Hardy-Weinberg Law The unifying...

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