Chapter 13: Chromosomes, Mapping And The Meiosis Inheritance Connection

28 Questions

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Meiosis Quizzes & Trivia

Questions and Answers
  • 1. 
    The theory of chromosomal inheritance was first proposed by
    • A. 

      Mendel.

    • B. 

      Morgan.

    • C. 

      Knight.

    • D. 

      Sutton.

    • E. 

      Stern.

  • 2. 
    In Drosophila, the sex of an individual is influenced by the number of copies of which chromosome?
    • A. 

      Autosome

    • B. 

      X

    • C. 

      1

    • D. 

      2

    • E. 

      White

  • 3. 
    The white eye mutation in Drosophila was shown to be sex-linked and caused by a gene residing on chromosome
    • A. 

      X.

    • B. 

      Y.

    • C. 

      1.

    • D. 

      2.

    • E. 

      Autosome.

  • 4. 
    The geneticist who discovered the white eye mutation in Drosophila and helped establish that genes are carried on chromosomes was
    • A. 

      Mendel.

    • B. 

      Sutton.

    • C. 

      Sturtevant.

    • D. 

      Janssens.

    • E. 

      Morgan.

  • 5. 
    Genetic exchange between two arms of a chromosome pair is more likely to occur if the distance between the genes is great. It is called
    • A. 

      Epistasis.

    • B. 

      Pleiotropy.

    • C. 

      Crossing over.

    • D. 

      Allelic exchange.

    • E. 

      Mutation.

  • 6. 
    Occasionally, chromosomes fail to separate during meiosis, leading to a condition in which the diploid number is not normal. This phenomenon is called
    • A. 

      Epistasis.

    • B. 

      Nondisjunction.

    • C. 

      Disjunction.

    • D. 

      Pleiotropy.

    • E. 

      Autosomy.

  • 7. 
    Humans who have lost even one copy of an autosome are called
    • A. 

      Tetrasomics.

    • B. 

      Trisomics.

    • C. 

      Bisomics.

    • D. 

      Monosomics.

    • E. 

      Nullisomics.

  • 8. 
    The most common condition of trisomy, in which three copies of a chromosome are present instead of the normal two, is of chromosome
    • A. 

      X.

    • B. 

      13.

    • C. 

      15.

    • D. 

      18.

    • E. 

      21.

  • 9. 
    • A. 

      Her father had at least one Barr body.

    • B. 

      Her mother also had two Barr bodies.

    • C. 

      She developed from a fertilized egg with 3 X chromosomes.

    • D. 

      She is actually a male with female characteristics.

    • E. 

      She is genetically a normal fertile female.

  • 10. 
    A human female with only one X chromosome is said to have a condition called
    • A. 

      Alzheimer's disease.

    • B. 

      Hemophilia.

    • C. 

      Turner syndrome.

    • D. 

      Klinefelter syndrome.

    • E. 

      Down syndrome.

  • 11. 
    If some alternative alleles with detrimental effects exist in significant proportions in populations, the condition is called
    • A. 

      Pleiotropy.

    • B. 

      A syndrome.

    • C. 

      Epistasis.

    • D. 

      A genetic disorder.

    • E. 

      A genetic imbalance.

  • 12. 
    The most common fatal genetic disorder of Caucasians is
    • A. 

      Cholera.

    • B. 

      Cystic fibrosis.

    • C. 

      Hemophilia.

    • D. 

      Sickle cell anemia.

    • E. 

      Muscular dystrophy.

  • 13. 
    In sickle cell anemia, the defective hemoglobin differs from the normal hemoglobin by
    • A. 

      The color of the pigment.

    • B. 

      The size of the molecule.

    • C. 

      A single amino acid substitution.

    • D. 

      The total number of amino acids.

    • E. 

      The type of blood cell it is found in.

  • 14. 
    Hemophilia is a
    • A. 

      Recessive condition.

    • B. 

      Dominant condition.

    • C. 

      Epistatic condition.

    • D. 

      Codominant condition.

    • E. 

      Condition that occurs with equal frequency in both sexes.

  • 15. 
    _______________ is a human hereditary disease that is caused by a dominant allele but does not show up in affected individuals until they are in middle age.
    • A. 

      Cystic fibrosis

    • B. 

      Sickle cell anemia

    • C. 

      Tay-Sachs disease

    • D. 

      Huntington's disease

    • E. 

      Hemophilia

  • 16. 
    Amniocentesis is a procedure that is normally used
    • A. 

      To reduce the risk of genetic disease.

    • B. 

      For gene therapy.

    • C. 

      To change the sex of the fetus.

    • D. 

      For diagnosis of genetic disorders.

    • E. 

      For nourishing the fetus.

  • 17. 
    Sickle cell anemia is caused by a defect in the
    • A. 

      Oxygen carrying pigment hemoglobin.

    • B. 

      Protein makeup in the liver.

    • C. 

      Sticky sides of the red blood cells.

    • D. 

      Allele for the production of mucus in the lungs.

  • 18. 
    How many Barr bodies does a normal human female contain in her cells?
    • A. 

      0

    • B. 

      1

    • C. 

      2

    • D. 

      3

  • 19. 
    A test cross can be used to do all of the following except
    • A. 

      Determine whether an individual that displays a dominant phenotype is homozygous for the trait.

    • B. 

      Determine whether an individual that displays a dominant phenotype is heterozygous for the trait.

    • C. 

      Gather genotype information from phenotype information.

    • D. 

      Identify the chromosome on which a gene is located.

  • 20. 
    In humans, if a non-disjunction event led to an individual with a genotype of XO, they would
    • A. 

      Be female because they do not have a Y chromosome.

    • B. 

      Be male because they only have one X chromosome.

    • C. 

      Display both male and female characteristics.

    • D. 

      Not survive.

  • 21. 
    In humans, if a non-disjunction event led to an individual with a genotype of XXY, they would
    • A. 

      Be female because they have two X chromosomes.

    • B. 

      Be male because they have a Y chromosome.

    • C. 

      Display both male and female characteristics.

    • D. 

      Not survive.

  • 22. 
    If a female was a carrier for sex-linked color blindness, what percentage of her male children would also be color blind?
    • A. 

      0%

    • B. 

      25%

    • C. 

      50%

    • D. 

      100%

  • 23. 
    Genetic differences between individuals in a population are called
    • A. 

      Markers.

    • B. 

      Alleles.

    • C. 

      Polymorphisms.

    • D. 

      Genetic disorders.

  • 24. 
    Which of the following statements about calico cats is false?
    • A. 

      Calico cats can be male or female.

    • B. 

      The different colored fur is due to the inactivation of one X chromosome.

    • C. 

      The variation in coat color is an example of an epistatic interaction.

    • D. 

      Calico cats are genetic mosaics.

  • 25. 
    Which offspring will inherit all their mitochondria DNA from their mother and none from their father?
    • A. 

      Daughters

    • B. 

      Sons

    • C. 

      Both sons and daughters

    • D. 

      Mitochondria DNA is inherited from both parents.

  • 26. 
    Nondisjunction of autosomes can lead to all of the following except
    • A. 

      Aneuploidy.

    • B. 

      Monosomy.

    • C. 

      Trisomy.

    • D. 

      Euploidy.

  • 27. 
    What is the relationship between recombination frequency and true genetic distance on a chromosome?
    • A. 

      As genetic distance increases, the recombination frequency increases in a linear fashion.

    • B. 

      As genetic distance increases, the recombination frequency increases, but never in a linear fashion.

    • C. 

      As genetic distance increases, the recombination frequency first increases in a linear fashion, but then levels off to a frequency of 0.5.

    • D. 

      As genetic distance increases, the recombination frequency first increases, but then decreases.

  • 28. 
    • A. 

      11.8 cM

    • B. 

      13.4 cM

    • C. 

      98 cM

    • D. 

      632 cM