Eilidh Young
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Stage I The University of Auckland BIOSCI 101 Quiz am BIOSCI101 Evolution - Lecture 3, erstellt von Eilidh Young am 19/05/2017.

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Eilidh Young
Erstellt von Eilidh Young vor etwa 7 Jahre
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BIOSCI101 Evolution - Lecture 3

Frage 1 von 6

1

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

Wähle eine der folgenden:

  • 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.

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Frage 2 von 6

1

Fülle die Lücken, um den Text zu vervollständigen.

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.

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Frage 3 von 6

1

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

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 4 von 6

1

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

Wähle eins der folgenden:

  • WAHR
  • FALSCH

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Frage 5 von 6

1

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

Wähle eine oder mehr der folgenden:

  • 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.

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Frage 6 von 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.

Klicke und ziehe, um den Text zu vervollständigen.

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

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