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Genetics Exam

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  • 9. What term is used to describe when both traits are dominant and show up at the same time?
    Codominance
    sex-linked
    Incomplete dominance
    Complete dominance
  • 8. Is this child a male or female?
    female
  • 1. Are blue eyes dominant or recessive in the chart?
    Recessive
  • 6. How many chromosomes are shown in this karyotype?
    46 chromosomes
  • 17. The physical characteristics of an organism are its..
    Genetics
    Heredity
    Phenotype
    Genotype
  • 15. Organisms that have two identical alleles for a trait are said to be..
    Homozygous
    Heterozygous
    Hybrid
    Dominant
  • 18. What is the percent chance that two people that are both carriers of sickle cell anemia will have a child with sickle cell?
    100%
    25%
    75%
    50%
  • 2. How many generations are in the chart
    3
  • 4. Do you think this trait is sex-linked or autosomal?
    Autosomal
  • 5. Which chromosomes in the picture are autosomes?
    pairs 1-22
  • 13. Which of the following combinations of sex chromosomes represents a male?
    XX
    XY
    Y
    XXY
  • 3. How many kids did the original parents have?
    5
  • 14. Different forms of genes are known as..
    Pure breeds
    alleles
    Recessive traits
    Hybrids
  • 7. Does this karyotype show a normal number of chromosomes?
    yes
  • 11. The failure of chromosomes to separate during meiosis is called..
    X-chromosome deactivation
    Turner's SYndrome
    nondisjunction
    Klinefelters Syndrome
  • 16. A man with blood type homozygous A marries a woman with type O. The baby has blood type..
    A
    AB
    O
    B
  • 12. Colorblindness is more common in males than in females because
    Males only need the traits on all the chromosomes
    Males only need the recessive traits on the Y
    males only need the recessive trait on one X
    Males only need the trait on both chromosomes
  • 10. What term is used to describe a blending of traits..when neither is dominant or recessive?
    Codominance
    Sex-linked
    Incomplete dominance
    Complete dominance
  • 19. Who is the father of genetics?
    Gregor Mendel
    Carl Sagan
    Mr. Hayes
    Anton Von Leevonhook
  • 20. How many traits are compared in a dihybrid cross?
    4
    2
    6
    1