Eilidh Young
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Stage I The University of Auckland BIOSCI 101 Quiz on BIOSCI101 Evolution - Lecture 3, created by Eilidh Young on 19/05/2017.

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Eilidh Young
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BIOSCI101 Evolution - Lecture 3

Question 1 of 6

1

Which of these is NOT true in regards to Neo-Darwinism?

Select one of the following:

  • Ample genetic variation arises and is contained in
    populations.

  • Evolution in populations is influenced by natural
    selection and is characterised by changes in gene
    frequencies.

  • Adaptive genetic variation produces small stepwise
    changes in phenotypes, which accumulate
    gradually over long periods of time.

  • The divergence of geographical isolated
    populations is unimpeded and gradually leads to
    speciation.

  • The gradual accumulation of genetic differences,
    via natural selection, results in new genera and
    families of organisms (macroevolution).

  • This hypothesis predicts that over generations a freely
    mating population will give rise to a uniform population
    of individuals.

Explanation

Question 2 of 6

1

Fill the blank spaces to complete the text.

What term are these definitions defining?

– changes in allele frequencies in a
population.
– a group of individuals of the same
species that live in the same area and interbreed.
– is the sum of all the alleles of all genes
of all individuals in the population.

Explanation

Question 3 of 6

1

If only one allele exists at a particular locus or gene in
a population, the allele is said to be fixed.

Select one of the following:

  • True
  • False

Explanation

Question 4 of 6

1

If there are two or more alleles for a gene in a
population, individuals will be either homozygous or
heterozygous.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 6

1

Which of these are TRUE, with respect to the Hardy-Weinberg Equilibrium?

Select one or more of the following:

  • Population genetics defines evolution as changes in
    allele frequencies.

  • In a population that is not evolving, allele and
    genotype frequencies will remain constant from one
    generation to the next.

  • A non-changing population is said to be in Hardy-Weinberg
    equilibrium.

  • The Hardy-Weinberg equation allows us to calculate
    the expected genotype frequencies given the
    observed allele frequencies.

Explanation

Question 6 of 6

1

Match the condition for Hardy-Weinberg equilibrium with its definition.

1. . The gene pool is modified if mutations change alleles.
2. . If individuals mate with a subset of the population, genotype frequencies change.
3. . Differences in survival and reproduction of individuals with different genotypes can alter allele frequencies.
4. . The smaller the population, the more likely that allele frequencies will fluctuate by change.
5. . Movement of individuals (alleles) in and out of a population can alter allele frequencies.

Select option below to complete the highlighted text

    No mutations
    Mating occurs at random
    No natural selection
    Extremely large population size
    No gene flow
    No genetic variation

Explanation

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