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Quiz by Sara Wilking

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20 questions
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  • Q1
    all the genes, including all alleles for each gene, that are present in a population
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    gene pool
    30s
  • Q2
    number of times that an allele occurs in a gene pool as a percentage of the total occurrence of all alleles for that gene in that gene pool
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    allele frequency
    30s
  • Q3
    trait controlled by one gene that has two alleles
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    single-gene trait
    30s
  • Q4
    trait controlled by two or more genes
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    polygenic trait
    30s
  • Q5
    form of natural selection in which individuals at one end of a distribution curve have higher fitness than individuals in the middle or at the other end of the curve
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    directional selectional
    30s
  • Q6
    form of natural selection in which individuals near the center of a distribution curve have higher fitness than individuals at either end of the curve
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    stabilizing selection
    30s
  • Q7
    natural selection in which individuals at the upper and lower ends of a distribution curve have higher fitness than individuals near the middle of the curve
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    disruptive selection
    30s
  • Q8
    random change in allele frequency caused by a series of chance occurrences that cause an allele to become more or less common in a population
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    genetic drift
    30s
  • Q9
    a change in allele frequency following a dramatic reduction in the size of a population
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    bottleneck effect
    30s
  • Q10
    change in allele frequencies as a result of the migration of a small subgroup of a population
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    founder effect
    30s
  • Q11
    situation in which allele frequencies in a population remain the same
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    genetic equilibrium
    30s
  • Q12
    principle that states that allele frequencies in a population remain constant unless one or more factors cause those frequencies to change
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    Hardy-Weinberg principle
    30s
  • Q13
    when individuals select mates based on heritable traits
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    sexual selection
    30s
  • Q14
    the movement of genes into or out of a population
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    gene flow
    30s
  • Q15
    a group of similar organisms that can breed and produce fertile offspring
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    species
    30s

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