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6-1 Natural Selection

Quiz by Jennifer Faulknor

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11 questions
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  • Q1
    organisms with traits that make them better adapted to their environment will live longer and reproduce more than organisms less adapted to their environment
    natural selection
  • Q2
    all the genes available in a population
    gene pool
  • Q3
    gene flow
  • Q4
    when traits favor reproduction, even though they may decrease an organisms ability to survive
    sexual selection
  • Q5
    biological change over time that causes descendants to be different from their ancestors
  • Q6
    when allele frequencies are stable and unchanging, therefore evolution is not occurring
    genetic equilibrium
  • Q7
    a physical trait that increases an organisms ability to survive in its environment
  • Q8
    principle of natural selection that explains how beneficial traits should become more common over time, causing a change in alleleic frequencies
    descent with modification
  • Q9
    random change in gene frequency over time. Rare alleles in a population will decrease (or increase) in frequency. Changes are more apparent in small isolated populations
    genetic drift
  • Q10
    differences in physical traits. Random mutations are the ultimate source. Also recombination and migration.
  • Q11
    organisms have lots of offspring that lead to limited resources and competition for those resources
    overproduction of offspring

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