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AP Biology Ecology and the Biosphere — practice questions — page 3

Explore 84 free Ecology and the Biosphere questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Ecology and the Biosphere questions and exercises with answers

Showing questions 61–84 of 84.

In population genetics, evolution is defined as a change in:Read the answer and worked solution →When every individual in a population carries an allele, that allele is said to be:Read the answer and worked solution →The sum of all the alleles in a population is its:Read the answer and worked solution →Random change in allele frequencies with no advantage to the population is:Read the answer and worked solution →Hardy and Weinberg were, respectively, an English mathematician and a German:Read the answer and worked solution →The Hardy-Weinberg principle assumes no mutation, no migration, no selection and:Read the answer and worked solution →If p and q are the only two alleles at a locus, then:Read the answer and worked solution →In Hardy-Weinberg terms, the frequency of heterozygotes is:Read the answer and worked solution →If observed allele frequencies deviate from Hardy-Weinberg predictions, the population is:Read the answer and worked solution →Natural selection can act only on traits that are:Read the answer and worked solution →An athlete builds muscle in the gym. Their children will not inherit it because the trait is:Read the answer and worked solution →Mating of closely related individuals is called:Read the answer and worked solution →One rabbit dies young in a population of 10, losing what share of the gene pool?Read the answer and worked solution →Small populations are more susceptible than large ones to:Read the answer and worked solution →An earthquake randomly kills most of a population, changing its genetic structure. This is the:Read the answer and worked solution →High rates of Huntington's disease among Afrikaners in South Africa illustrate the:Read the answer and worked solution →Catch the evolutionary forcesRead the answer and worked solution →Pop the Hardy-Weinberg symbolsRead the answer and worked solution →Run the population genetics lanesRead the answer and worked solution →Slice the population genetics wordsRead the answer and worked solution →Heritable or acquiredRead the answer and worked solution →Sort drift, gene flow and selectionRead the answer and worked solution →Type the numberRead the answer and worked solution →Population genetics bingoRead the answer and worked solution →

Worked practice questions

In population genetics, evolution is defined as a change in:

  1. Allele frequency in a population
  2. Body size of individuals
  3. Behaviour of one individual
  4. Climate of the habitat
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Correct answer: A. Allele frequency in a population

1. Behind phenotype change is genetic change. 2. Evolution is a change in allele frequency. 3. Individuals do not evolve; populations do. _Source: OpenStax Biology 2e, Chapter 19, The Evolution of Populations (CC BY 4.0)._

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When every individual in a population carries an allele, that allele is said to be:

  1. Novel
  2. Fixed
  3. Lost
  4. Rare
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Correct answer: B. Fixed

1. Selection can spread an allele fully. 2. It becomes fixed. 3. Deleterious dominant alleles may be eliminated. _Source: OpenStax Biology 2e, Chapter 19, The Evolution of Populations (CC BY 4.0)._

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The sum of all the alleles in a population is its:

  1. Phenotype
  2. Karyotype
  3. Gene pool
  4. Genotype
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Correct answer: C. Gene pool

1. Every allele of every individual counts. 2. That is the gene pool. 3. Selection and drift change it. _Source: OpenStax Biology 2e, Chapter 19, The Evolution of Populations (CC BY 4.0)._

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