Genetic and Environmental Causes of Variation
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Questions and Answers

What term describes the conditions in which individuals have developed?

  • Environmental variation (correct)
  • Haploid variation
  • Biological sex variation
  • Genetic variation
  • During fertilization, what type of cell is formed when the chromosomes fuse?

  • Diploid cell
  • Haploid cell
  • Zygote (correct)
  • Sex cell
  • What is the term for a cell with half the normal number of chromosomes?

  • Haploid cell (correct)
  • Diploid cell
  • Sex cell
  • Zygote
  • Which of the following is an example of genetic variation in humans?

    <p>Blood group</p> Signup and view all the answers

    What determines whether an individual has lobed or lobeless ears?

    <p>Genetic causes</p> Signup and view all the answers

    What type of information does a zygote contain?

    <p>Diploid information</p> Signup and view all the answers

    What is the term for the full number of chromosomes in a cell?

    <p>Diploid</p> Signup and view all the answers

    Which factor can affect the characteristics of animal and plant species?

    <p>Climate</p> Signup and view all the answers

    What kind of information is inherited from parents to determine biological sex?

    <p>Genetic information</p> Signup and view all the answers

    What type of variation results from factors such as accidents, culture, and lifestyle?

    <p>Environmental variation</p> Signup and view all the answers

    Study Notes

    Genetics and Development

    • The term that describes the conditions in which individuals have developed is environment.

    Cell Formation and Chromosomes

    • During fertilization, a zygote is formed when the chromosomes fuse.
    • A cell with half the normal number of chromosomes is described as haploid.
    • The full number of chromosomes in a cell is described as diploid.

    Genetic Variation

    • Genetic variation in humans can be seen in differences such as freckles, eye color, and ear shape.
    • The presence or absence of lobes on an individual's ears is determined by their genetics.

    Inheritance and Zygote

    • A zygote contains genetic information inherited from both parents.
    • The genetic information inherited from parents determines biological sex.

    Variation and Factors

    • Environmental factors such as accidents, culture, and lifestyle can contribute to variation in characteristics.
    • Genetic variation can result from factors such as mutation and genetic drift.

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    Description

    Explore the factors contributing to variation within a species, including genetic inheritance, environmental influences, and the combination of both. Learn about the genetic information passed down from both parents and how it contributes to the unique traits of offspring.

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