Genetics Trivia Quiz: Chromosomes And Cellular Reproduction

51 Questions | Total Attempts: 437

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Genetics Trivia Quiz: Chromosomes And Cellular Reproduction - Quiz

All living things have chromosomes within them, which are useful when it comes to cellular reproduction. Cells usually break apart to form new ones and in so doing the chromosomes duplicate themselves. Just how much do you know about the different chromosomes within our bodies and the process of cell reproduction? Take up this test and get to find out!


Questions and Answers
  • 1. 
    A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42). As in humans, sex chromosomes determine sex: XX in females and XY in males. What is the total number of telomeres in a rat cell in G2?  
    • A. 

      21

    • B. 

      42

    • C. 

      84

    • D. 

      126

    • E. 

      168

  • 2. 
    A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42). As in humans, sex chromosomes determine sex: XX in females and XY in males. What is the total number of chromosomes present in the cell during metaphase I of meiosis?  
    • A. 

      21

    • B. 

      42

    • C. 

      84

    • D. 

      126

    • E. 

      168

  • 3. 
    A diploid somatic cell from a rat has a total of 42 chromosomes (2n = 42). As in humans, sex chromosomes determine sex: XX in females and XY in males. What is the total number of chromosomes present in the cell during metaphase I of meiosis?  
    • A. 

      21

    • B. 

      40

    • C. 

      41

    • D. 

      42

    • E. 

      84

  • 4. 
    A dividing eukaryotic cell is treated with a drug that inhibits the molecular motors associated with kinetochores. At which cell cycle stage would it stop?  
    • A. 

      G1

    • B. 

      S

    • C. 

      G2

    • D. 

      M (anaphase)

    • E. 

      M (telophase)

  • 5. 
    A eukaryotic cell in G1 has a mutation that prevents cyclin B from being made. At which cell cycle stage would this cell stop?  
    • A. 

      G1

    • B. 

      S

    • C. 

      G2

    • D. 

      M (anaphase)

    • E. 

      M (telophase)

  • 6. 
    The figure shows a chromosomal separation taking place. The letters stand for genes; capital and lowercase stand for different alleles. The diploid chromosome number in this organism is four. What process is shown?  
    • A. 

      Anaphase of mitosis

    • B. 

      Telophase of meiosis I

    • C. 

      Anaphase of meiosis I

    • D. 

      Telophase of mitosis

    • E. 

      Anaphase of meiosis II

  • 7. 
    Errors in chromosome separation are rarely a problem for an organism.  
    • A. 

      True

    • B. 

      False

  • 8. 
    The prokaryotes include both the eubacteria and the archaea.  
    • A. 

      True

    • B. 

      False

  • 9. 
    Archaea are more closely related to eukaryotes than they are to eubacteria.  
    • A. 

      True

    • B. 

      False

  • 10. 
    Generally, chromosomes of eukaryotes are circular.  
    • A. 

      True

    • B. 

      False

  • 11. 
    Cells with a single set of chromosomes are called diploid.  
    • A. 

      True

    • B. 

      False

  • 12. 
    In a flowering plant, the male part of the flower (the stamen) produces haploid microsporocyte cells that divide by _____(a)_______ to produce sperm. A pollen grain that lands on a stigma grows a pollen tube to deliver _____(b)_______  (how many?) sperm to the ovary. Fusion of a sperm with an egg produces a _____(c)_______  n cell called a _____(d)_______ . To provide food for the developing embryo, a tissue called endosperm is produced through double fertilization. Endosperm has a ploidy of _____(e)_______  n. answers: (a, b, c, d, e)  
  • 13. 
    In prokaryotes, replication usually begins at a specific place on the chromosome called ____________  
  • 14. 
    The ____________ is the highly organized internal scaffolding of the nucleus.  
  • 15. 
    The attachment point on the chromosome for spindle microtubules is the _____________.  
  • 16. 
    ____________ refers to the splitting of the cytoplasm, separating one cell into two.  
  • 17. 
    Prokaryotic chromosomes do not have telomeres because:  
    • A. 

      They do not go through mitosis.

    • B. 

      They do not go through DNA replication.

    • C. 

      They are in the cytoplasm.

    • D. 

      They are circular.

    • E. 

      They have no centromeres.

  • 18. 
    In eukaryotes, chromosomes do not contain:  
    • A. 

      Proteases

    • B. 

      Chromatin

    • C. 

      Proteins

    • D. 

      Histones

    • E. 

      DNA

  • 19. 
    In order to be functional, a chromosome requires all of the following except:  
    • A. 

      Centromeres

    • B. 

      Origins of replication

    • C. 

      Nucleomeres

    • D. 

      Telomeres

  • 20. 
    What process is unique to plants?  
    • A. 

      Meiosis

    • B. 

      Double fertilization

    • C. 

      Crossing over

    • D. 

      Haploid gametes

    • E. 

      Spermatogenesis

  • 21. 
    Chromosomes are in unseparated, sister-chromatid form, at the end of the phase(s)  
    • A. 

      Meiosis I prophase

    • B. 

      Meiosis I anaphase

    • C. 

      Meiosis II prophase

    • D. 

      Meiosis II anaphase

    • E. 

      Mitosis prophase

    • F. 

      Mitosis anaphase

  • 22. 
    The first stage after which a dividing cell that started as a diploid would be haploid  
    • A. 

      Meiosis I prophase

    • B. 

      Meiosis I anaphase

    • C. 

      Meiosis II prophase

    • D. 

      Meiosis II anaphase

    • E. 

      Mitosis prophase

    • F. 

      Mitosis anaphase

  • 23. 
    Sister chromatids separate during  
    • A. 

      Meiosis I prophase

    • B. 

      Meiosis I anaphase

    • C. 

      Meiosis II prophase

    • D. 

      Meiosis II anaphase

    • E. 

      Mitosis prophase

    • F. 

      Mitosis anaphase

  • 24. 
    Chromosomes are randomly partitioned during_____, contributing to genetic diversity.  
    • A. 

      Meiosis I prophase

    • B. 

      Meiosis I anaphase

    • C. 

      Meiosis II prophase

    • D. 

      Meiosis II anaphase

    • E. 

      Mitosis prophase

    • F. 

      Mitosis anaphase

  • 25. 
    Crossing over (genetic recombination) occurs in_________.  
    • A. 

      Meiosis I prophase

    • B. 

      Meiosis I anaphase

    • C. 

      Meiosis II prophase

    • D. 

      Meiosis II anaphase

    • E. 

      Mitosis prophase

    • F. 

      Mitosis anaphase

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