Genetic Variation Test

25 Questions | Total Attempts: 2987

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DNA Quizzes & Trivia

Genetic Variation and DNA Test


Questions and Answers
  • 1. 
    All human BODY CELLS contain this many chromosomes    
    • A. 

      23

    • B. 

      46

    • C. 

      8

    • D. 

      45

  • 2. 
    Each GAMETE contains this many chromosomes as a body cell
    • A. 

      Twice as many

    • B. 

      Half as many

    • C. 

      The same amount

    • D. 

      1/3 as many

  • 3. 
    Sperm cells and egg cells are examples of
    • A. 

      Body cells

    • B. 

      Meiosis

    • C. 

      Gametes

    • D. 

      DNA

  • 4. 
    The name of the large molecule contained in chromosomes is called
    • A. 

      RNA

    • B. 

      DEA

    • C. 

      DVD

    • D. 

      DNA

  • 5. 
    What does a DNA structure look like?
    • A. 

      A twisted ladder

    • B. 

      A braided rope

    • C. 

      A long stick

    • D. 

      A twizzler

  • 6. 
    Where are chromosomes located inside the cell?
    • A. 

      The ribosome

    • B. 

      The nuclear membrane

    • C. 

      The cell wall

    • D. 

      The nucleus

  • 7. 
    Different versions of the same gene are known as
    • A. 

      Centromeres

    • B. 

      Alleles

    • C. 

      Chromosomes

    • D. 

      Gametes

  • 8. 
    Heterozygous means
    • A. 

      Having two of the same genes for a certain trait

    • B. 

      Having a zygous that is hetero

    • C. 

      Having two genes for a trait that are different

    • D. 

      None of the above

  • 9. 
    Having two of the same genes for a certain trait is called
    • A. 

      Heterozygous

    • B. 

      Homozanious

    • C. 

      The same

    • D. 

      Homozygous

  • 10. 
    The type of gene that always shows itself is called a
    • A. 

      Powerful gene

    • B. 

      Dominant gene

    • C. 

      Homozygous gene

    • D. 

      Recessive gene

  • 11. 
    A chart that shows the possible gene combinations is called a
    • A. 

      A gene symbol

    • B. 

      Karyotype

    • C. 

      A Punnett Sguare

    • D. 

      A pie chart

  • 12. 
    Genes for a trait that are hidden when the dominant gene is present are called
    • A. 

      A wimpy gene

    • B. 

      Heterozygous

    • C. 

      Recessitative jeans

    • D. 

      Recessive gene

  • 13. 
    What are the chances of an offspring being a boy or a girl?
    • A. 

      25%

    • B. 

      33%

    • C. 

      50%

    • D. 

      75%

  • 14. 
    • A. 

      Codominance

    • B. 

      Incomplete dominance

    • C. 

      Complete dominance

    • D. 

      A goofy looking offspring

  • 15. 
    When alleles from each parent both appear in an offspring, it is called
    • A. 

      Complete dominance

    • B. 

      Codominance

    • C. 

      Incomplete dominance

    • D. 

      Coordination

  • 16. 
    A recessive gene always shows itself.
    • A. 

      True

    • B. 

      False

  • 17. 
    If the trait for the fur pattern on a dog were solid fur(f) and spotted fur(F), a homozygous female with solid fur and a homozygous male with spotted fur have a 25% chance of having an offspring with solid fur.
    • A. 

      True

    • B. 

      False

  • 18. 
    • A. 

      46

    • B. 

      12

    • C. 

      23

    • D. 

      8

  • 19. 
  • 20. 
    Male organisms have
    • A. 

      Two x chromosomes

    • B. 

      Two y chromosomes

    • C. 

      One x and one z chromosome

    • D. 

      One x and one y chromosome

  • 21. 
    When a woman has a gene for a disorder, but does not show any sign of that disorder, she is called a
    • A. 

      Weirdo

    • B. 

      Carrier

    • C. 

      Hemophiliac

    • D. 

      Sex-linked trait

  • 22. 
    Sex-linked traits are not passed through the x and y chromosomes.
    • A. 

      True

    • B. 

      False

  • 23. 
    A larkey that is homozygous for red eyes(EE) mates with a larkey that is homozygous for gray eyes(ee). What percent chance will their offspring have gray eyes?
    • A. 

      25%

    • B. 

      50%

    • C. 

      75%

    • D. 

      None of the above

  • 24. 
    FF-striped fur, Ff- solid fur, ff- spotted fur Two larkeys with solid fur mate. Which fur will their offspring most likely have?
    • A. 

      Striped

    • B. 

      Solid

    • C. 

      Spotted

  • 25. 
    A woman that is a carrier of colorblindness mates with a man that is colorblind. What percent chance will their offspring actually be colorblind?
    • A. 

      25%

    • B. 

      50%

    • C. 

      75%

    • D. 

      None of the above