Quiz  /  Genetics Class 9 MCQ Questions With Answers

  • 1. 
    Grey (G) fur is dominant to brown (g) fur in mice. What would be the genotype of a mouse that is homozygous dominant?

  • GG
  • Gg
  • gg
  • GGG

  • 2. 
    The genetic makeup of an organism. Example BB

  • genotype
  • phenotype
  • Dominant
  • Recessive

  • 3. 
    How many alleles (letters) do each person carry for a trait?

  • 1
  • 2
  • 3
  • 4

  • 4. 
    Having two different allele forms for a particular gene. Ex. Aa

  • Heterozygous
  • Homozygous
  • Dominant
  • Recessive

  • 5. 
    A single cross such as flower color.

  • mono hybrid
  • dihybrid
  • crossing over
  • homozygous

  • 6. 
    The physical look or the organism, such as brown eyes

  • genotype
  • phenotype
  • Dominant
  • Recessive

  • 7. 
    Who is considered the "father of genetics"?

  • Gregor Mendel
  • Reginald Punnett
  • James Watson
  • Justin Bieber

  • 8. 
    T - tall and t = shortIn the punnett square below, what belongs in the missing square

  • tt
  • Tt
  • Bb
  • TT

  • 9. 
    Females-XX; MalesXY. A couple has 4 girls. What is the chance the next child will be a boy?

  • 75%
  • 100%
  • 25%
  • 50%

  • 10. 
    How many alleles (letters) does a child get from each parent for each trait?

  • 1
  • 2
  • 3
  • 4

  • 11. 
    When a capital letter is used, what kind of allele is being represented?

  • Recessive Allele
  • Codominance
  • Punnett Squares
  • Dominant Allele

  • 12. 
    Which of the following is homozygous dominant?

  • Yy
  • Y
  • yy
  • YY

  • 13. 
    T = tall an t = shortWhat is the phenotype for Tt?

  • short
  • tall
  • medium sized
  • neither tall or short

  • 14. 
    Characteristic that is inherited; can be either dominant or recessive

  • genes
  • allele
  • chromosome
  • trait

  • 15. 
    What is AA

  • Homozygous Dominant
  • Heterozygous
  • Homozygous Recessive
  • Heterozygous dominant

  • 16. 
    "The Great White Shark was 20 feet in length. Phenotype or Genotype?

  • phenotype
  • genotype

  • 17. 
    How many chromosomes are in a sex cell?

  • 46
  • 23
  • 26
  • 43
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