EVOLUTION
HARDY WEINBERG EQUILIBRIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The population will evolve, but much more slowly than normal
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The makeup of the population’s gene pool will remain virtually the same as long as these conditions hold.
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The composition of the population’s gene pool will change slowly in a predictable manner.
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Dominant alleles in the population’s gene pool will slowly increase in frequency while recessive alleles will decrease.
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The population probably has an equal frequency of A and a alleles.
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Detailed explanation-1: -If a population experiences no migration, is very large, has no mutations, has random mating, and there is no selection, which of the following would you predict? The makeup of the population’s gene pool will remain virtually the same as long as these conditions hold.
Detailed explanation-2: -Explanation: Hardy-Weinberg equilibrium describes no change in the genotypic frequencies of a population. After one generation, assuming random mating, a closed system, a large population, and no random mutations, the genotypic frequencies of the population will not change.
Detailed explanation-3: -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 p2 for the AA genotype, 2pq for the Aa genotype and q2 for the aa genotype.
Detailed explanation-4: -Non-random mating can be assortative, when individuals are more likely to mate with similar individuals (e.g., individuals having the same genotype or phenotype), or it can be disassortative, when individuals prefer to mate with dissimilar individuals.
Detailed explanation-5: -(However, natural selection acting on the results of a mutation can be a powerful mechanism of evolution!) Non-random mating. In non-random mating, organisms may prefer to mate with others of the same genotype or of different genotypes.