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Unit 4: Traits and Reproduction Exam Practice

Quiz by Ms. Foskey

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15 questions
Show answers
  • Q1
    During times of drought, why do brown beetles have an advantage over green beetles?
    Green beetles survive better due to their lighter color.
    Green beetles reproduce faster than brown beetles.
    Brown beetles blend in with their environment and avoid predators.
    Brown beetles can find food more easily.
    30s
  • Q2
    A scientist observes that a population of rabbits changes over time. What concept does this BEST demonstrate?
    Genetic engineering
    Natural selection
    Selective breeding
    Artificial selection
    30s
  • Q3
    A scientist studies a population of butterflies. Which outcome is MOST likely as air pollution darkens the trees where the butterflies rest?
    Dark-colored butterflies will survive more often and pass on their traits.
    The mutation will disappear from the butterfly population.
    The population of light-colored butterflies will increase.
    Butterflies will change their color to match the trees.
    30s
  • Q4
    Which of the following is true about mutations?
    Mutations are caused only by environmental changes.
    Mutations are always harmful.
    Organisms develop mutations when they need to survive.
    Mutations can introduce new traits into a population.
    30s
  • Q5
    What is the primary difference between selective breeding and genetic modification?
    Selective breeding alters DNA directly.
    Selective breeding requires many generations to develop desired traits.
    Genetic modification is a form of natural selection.
    Genetic modification is slower than selective breeding.
    30s
  • Q6
    Which of the following is an example of artificial selection?
    A farmer choosing the largest cows to breed.
    The rise of dark-colored moths in polluted areas.
    Bacteria evolving resistance to antibiotics.
    Birds develop longer beaks over time.
    30s
  • Q7
    How will the melting snow affect the bird population in a snowy environment?
    Birds with brown feathers will have a survival advantage.
    Birds with white feathers will start changing color.
    All birds will be equally likely to survive.
    The number of brown-feathered birds will decrease.
    30s
  • Q8
    If an oil spill affects a fish population, what is most likely to happen?
    All fish will immediately die.
    The environment will have no effect on the fish population.
    The fish population will become stronger due to mutations.
    Some fish with traits that help them survive pollution will reproduce more.
    30s
  • Q9
    If a pea plant has the genotype Tt, what is the phenotype of this plant?
    Half short, half tall
    Short
    Tall
    A mix of both tall and short traits
    30s
  • Q10
    Which of the following BEST describes genetic engineering?
    A scientist inserts a bacterial gene into rice plants to help them survive droughts.
    A dog breeder chooses two strong dogs to mate, creating stronger puppies.
    A farmer breeds only the fastest horses to produce fast offspring.
    A scientist selects the largest apples from a tree to plant more apple trees.
    30s
  • Q11
    What percentage of offspring from a homozygous dominant (BB) parent crossed with a homozygous recessive (bb) parent will be heterozygous (Bb)?
    25%
    100%
    50%
    0%
    30s
  • Q12
    Which of the following is true about genetic modification?
    A dog breeder chooses two strong dogs to mate.
    A scientist inserts a bacterial gene into rice plants to help them survive droughts.
    A scientist selects the largest apples from a tree.
    A farmer breeds only the fastest horses.
    30s
  • Q13
    In a snowy environment, how will the melting snow affect a bird population with white and brown feathers?
    Birds with brown feathers will have a survival advantage.
    Birds with white feathers will start changing color.
    All birds will be equally likely to survive.
    The number of brown-feathered birds will decrease.
    30s
  • Q14
    Which statement is true about Arctic Apples that resist browning?
    They were produced by selective breeding.
    Their DNA has been altered using biotechnology.
    They have naturally developed a new trait.
    They will not pass on their non-browning trait to their offspring.
    30s
  • Q15
    What concept is demonstrated when a population of rabbits shows more thick-furred rabbits surviving in cold climates?
    Genetic engineering
    Artificial selection
    Natural selection
    Selective breeding
    30s

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