Unraveling the Mystery of Dominant and Recessive Alleles
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Questions and Answers

Which of the following factors influence allele frequencies in a population?

  • Natural selection and nonrandom mating (correct)
  • Nonrandom mating and genetic drift
  • Mutation and genetic drift
  • Natural selection and migration
  • What is the Hardy-Weinberg Equation used for?

  • Measuring genetic variation over time
  • Determining the driving force of evolution
  • Calculating genotype frequencies in a population (correct)
  • Evaluating the effects of migration on population genetics
  • What is the driving force of evolution?

  • Migration
  • Natural selection (correct)
  • Genetic drift
  • Mutation
  • Which of the following is true about the process of natural selection?

    <p>Traits that favor survival and reproduction are passed on to the next generation.</p> Signup and view all the answers

    What is the main reason for the increase in the frequency of mutations that confer increased survival and reproductive success within a population?

    <p>Natural selection</p> Signup and view all the answers

    What is the study of how genetic variations in a population change over time under the influence of systematic and random forces?

    <p>Population genetics</p> Signup and view all the answers

    What is the main source of genetic variation in a population?

    <p>Mutation</p> Signup and view all the answers

    Which of the following is one of the 5 conditions that must be met for Hardy-Weinberg equilibrium to occur in a population?

    <p>There is immigration or emigration.</p> Signup and view all the answers

    What is the equation used to calculate the relative frequency of the different genotypes in a population according to the Hardy-Weinberg principle?

    <p>$p^2 + 2pq + q^2 = 1$</p> Signup and view all the answers

    In the M-N blood type locus, what is the frequency of the LM allele in the population?

    <p>0.5395</p> Signup and view all the answers

    What is the expected genotype frequency for LMLN in the M-N blood type locus?

    <p>0.4969</p> Signup and view all the answers

    Which of the following scenarios is most likely to result in the maintenance of a deleterious allele in a population?

    <p>A population with a high frequency of heterozygotes</p> Signup and view all the answers

    What is the effect of mutation on allele frequencies in a population?

    <p>Mutation increases the frequency of one allele and decreases the frequency of another allele</p> Signup and view all the answers

    Which of the following scenarios is an example of the Founder Effect?

    <p>A small sub-population becomes isolated and non-random sampling of the original population leads to a reduction in genetic diversity</p> Signup and view all the answers

    What is the effect of random genetic drift on allele frequencies in a population?

    <p>Random genetic drift can lead to the loss of alleles in a population</p> Signup and view all the answers

    According to the Hardy-Weinberg equilibrium, what conditions must be met for the allele frequencies to remain unaltered in the next generation?

    <p>Random mating and no survival advantage or reproductive differences between genotypes</p> Signup and view all the answers

    In a large randomly mating population, approximately 1 in 10,000 people are affected by a autosomal recessive metabolic disorder. What is the frequency of homozygous affected individuals in this population?

    <p>0.0001</p> Signup and view all the answers

    In a large randomly mating population, approximately 1 in 8,900 males are affected by an X-linked recessive disease. What percentage of women in that same population would you expect to be carriers for this disease?

    <p>0.02%</p> Signup and view all the answers

    In a large randomly mating European population, approximately 1 in 1,600 individuals are affected by an autosomal recessive disease. What percentage of individuals in this same population would you expect to be carriers of this disease?

    <p>5%</p> Signup and view all the answers

    According to the Theory of Natural Selection, which of the following is NOT one of the four basic postulates?

    <p>Organisms tend to produce more offspring than the environment can support.</p> Signup and view all the answers

    According to Darwin's observations, which of the following is NOT one of the inferences drawn from his observations?

    <p>Species change.</p> Signup and view all the answers

    According to Darwin's observations, which of the following is NOT one of the key dimensions of his thought?

    <p>Populations are ever increasing, so survival NOT guaranteed.</p> Signup and view all the answers

    According to the text, what is the main consequence of natural selection on the beak size and shape of the finches in the Galapagos Islands?

    <p>The beak size and shape has a positive effect on their reproductive fitness.</p> Signup and view all the answers

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