Darwin's Theory of Evolution: Natural Selection vs Artificial Selection
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Questions and Answers

What is the first requirement for the process of natural selection according to Darwin?

  • Variation
  • Competition
  • Overproduction (correct)
  • Adaptation

    • Which of the following traits are hereditary in a population according to the text?

  • Behavioral instincts, learned skills, and social interactions
  • Environmental adaptation, camouflage ability, and intelligence
  • Food preference, nesting habits, and migration patterns
  • Color, size, crawling ability, and shell hardness (correct)

    • What is the struggle that living things face in natural selection primarily for?

  • Reproduction opportunities
  • Territorial expansion
  • Survival resources like food, water, and shelter (correct)
  • Establishing dominance hierarchy

    • What did Darwin observe about individuals with helpful characteristics in natural selection?

    <p>They were more likely to survive and reproduce</p> Signup and view all the answers

    What leads to the accumulation of helpful variations in a population over time?

    <p>Natural selection favoring beneficial traits</p> Signup and view all the answers

    According to Darwin, what happens to unfavorable variations in a population over time?

    <p>They may disappear from the population</p> Signup and view all the answers

    What can affect an organism's ability to survive and may lead to natural selection?

    <p>Changes in the environment</p> Signup and view all the answers

    Which of the following is determined by genes and can be acted upon by natural selection?

    <p>Eye color</p> Signup and view all the answers

    What is sexual selection?

    <p>Natural selection that acts on an organism's ability to get the best possible mate</p> Signup and view all the answers

    How do genetic variations contribute to the diversity of organisms?

    <p>By increasing the variety within a population</p> Signup and view all the answers

    In sexually-reproducing organisms, why do females choose mates with specific traits?

    <p>To increase the fitness of their offspring</p> Signup and view all the answers

    Which type of cell mutation can be passed on to offspring?

    <p>Mutation to egg cells</p> Signup and view all the answers

    How does male competition manifest in some species?

    <p>By developing exaggerated physical features like horns or body size</p> Signup and view all the answers

    What impact do mutations to body cells have on future generations?

    <p>They have no effect on future generations</p> Signup and view all the answers

    What is an example of coevolution mentioned in the text?

    <p>Acacia trees evolving hollow thorns and nectar pores in response to ant interactions</p> Signup and view all the answers

    In the context of natural selection, why are only traits controlled by genes subject to selective pressures?

    <p>Genes provide instructions for specific functions</p> Signup and view all the answers

    What do fossils represent in the context of evolution?

    <p>Preserved remains or traces of living organisms</p> Signup and view all the answers

    How are patterns in the fossil record useful for scientists?

    <p>As data for analysis and interpretation</p> Signup and view all the answers

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