Cell Division and Genetic Diversity Quiz
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Questions and Answers

During which phase of the cell cycle does the c number double?

  • S phase (correct)
  • G2 phase
  • G1 phase
  • M phase

    • Which phase of meiosis is responsible for generating haploid gametes?

  • Prophase I
  • Meiosis I (correct)
  • Meiosis II
  • Prophase II

    • During which phase of meiosis does crossing-over or homologous recombination occur?

  • Prophase II
  • Prophase I (correct)
  • Anaphase I
  • Anaphase II

    • What is the ploidy number throughout the cell cycle?

    <p>2n</p> Signup and view all the answers

    How many copies of DNA double helices are there in each chromosome during G2 phase?

    <p>4</p> Signup and view all the answers

    Which phase of meiosis is responsible for pulling apart sister chromatids into daughter cells?

    <p>Anaphase II</p> Signup and view all the answers

    How many possible combinations of chromosomes can be generated through independent assortment?

    <p>8.4 million</p> Signup and view all the answers

    What is the average number of times crossing-over or homologous recombination occurs in humans?

    <p>2</p> Signup and view all the answers

    What is the percentage of variation in human genomic sequences?

    <p>0.1%</p> Signup and view all the answers

    What is the term for different versions of a gene?

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

    During which phase of the cell cycle does DNA and chromosomes replicate?

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

    What are the functions of the cell cycle and cell division?

    <p>Both of the above</p> Signup and view all the answers

    What is the main difference between spermatogenesis and oogenesis?

    <p>Spermatogenesis occurs in males, while oogenesis occurs in females.</p> Signup and view all the answers

    What is the purpose of mitosis and cytokinesis?

    <p>To divide the cell and segregate chromosomes into daughter cells</p> Signup and view all the answers

    How does genetic diversity generate during sexual reproduction?

    <p>Through the combination of genetic material from two parents</p> Signup and view all the answers

    What is the relationship between race and genetics?

    <p>Race is a social construct that does not directly correspond to genetic differences</p> Signup and view all the answers

    What changes through the cell cycle and meiosis?

    <p>Both chromosome content (n) and DNA content (c)</p> Signup and view all the answers

    What are DNA sequence variants?

    <p>Differences in DNA sequence between individuals</p> Signup and view all the answers

    Where is the distribution of human genetic diversity highest?

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

    What happens during the G1 phase of the cell cycle?

    <p>Growth and metabolism</p> Signup and view all the answers

    Which term refers to the most common allele of a gene in a population?

    <p>Wild-type allele</p> Signup and view all the answers

    What is the definition of a mutation?

    <p>A DNA sequence variant arising due to DNA replication errors or other DNA damage</p> Signup and view all the answers

    What is the definition of polymorphisms?

    <p>A variant found in less than 1% of the population</p> Signup and view all the answers

    What is the definition of a variant?

    <p>Any alteration in DNA sequence from the wild-type</p> Signup and view all the answers

    What is the Out of Africa Hypothesis?

    <p>All of the above</p> Signup and view all the answers

    How many waves of migration are associated with the Out of Africa Hypothesis?

    <p>2</p> Signup and view all the answers

    When did the first wave of migration associated with the Out of Africa Hypothesis occur?

    <p>130,000-115,000 years ago</p> Signup and view all the answers

    Where did the second wave of migration associated with the Out of Africa Hypothesis potentially establish?

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

    What percentage of the population is associated with the second wave of migration?

    <p>1%</p> Signup and view all the answers

    What is the definition of a rare variant?

    <p>A variant found in less than 1% of the population</p> Signup and view all the answers

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