Human Genetics Warm Up 1

18 Questions | Total Attempts: 75

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Human Genetics Warm Up 1 - Quiz

Welcome to the biology classroom and laboratory of the 21st Century. This warm-up or "bell ringer" as they are known in Harrison County in the great state of West Virginia will concentrate on human genetics, karyotypes, and sex-linked traits. As the "fill-in" questions appear in this exercise, please enter your all answers using lower case letters. I wish you well and make high marks on this warm-up exercise.


Questions and Answers
  • 1. 
    In humans, several of the following genetic traits are considered "sex-linked". Which of the following are correct?  (HINT: there are 3 correct answers.)
    • A. 

      Hemophilia

    • B. 

      Colorblindness

    • C. 

      Skin color

    • D. 

      Sex of the offspring

    • E. 

      Hair color

  • 2. 
    In the early 1900's, a researcher by the name of ______ began experimenting with the small fruit fly (Drosophilia melanogaster).
    • A. 

      Oswald

    • B. 

      Chase

    • C. 

      Pinard

    • D. 

      Mendel

    • E. 

      Morgan

  • 3. 
    There are two types of chromosomes and both contain genes, but only one determines the sex of the individual. What is the name of those chromosomes?
    • A. 

      Autosomes

    • B. 

      Sex chromosomes

    • C. 

      Sex-Linked Autosomes

    • D. 

      Sex-Influenced chromosomes

  • 4. 
    The SRY is a region of genes coding for a protein that causes the gonads of an embryo to develop ovaries.
    • A. 

      True

    • B. 

      False

  • 5. 
    What is the wild dominant eye color for the common fruit fly, Drosophila melanogaster?
    • A. 

      White

    • B. 

      Blue

    • C. 

      Red

    • D. 

      Vermillion (dark red)

  • 6. 
    What is the correct sex chromosomes representing male and female of the human species, presented in the list below?
    • A. 

      XXY and Y

    • B. 

      XX and XXY

    • C. 

      XY and XX

    • D. 

      X and YY

  • 7. 
    When a male Drosophila melanogaster is mated with a female Drosophila melanogaster. What is the expected ratio of the first filial generation?
    • A. 

      100% - [XX]

    • B. 

      100% - [XY] 100% - [XY]

    • C. 

      50% - [XX] and 50% - [XY]

    • D. 

      25% - [XY] and 75% - [XX]

    • E. 

      75% - [XX] and 25% - [XY]

  • 8. 
    When Thomas Hunt Morgan crossed a red eyed male with a white eye female. What is the correct expected ratio of individuals?
    • A. 

      50% of males are red eye and 25% of females are white eye

    • B. 

      50% of males are red eye and 50% of females are white eye

    • C. 

      25% of males are white eye and 75% of females are red eye

    • D. 

      50% of males are red eye and 50% of females are red eye

  • 9. 
    When Thomas Hunt Morgan crossed a heterozygous red eye male and a heterozygous red eye female. The phenotyic ratio of red eyes to white eyes was 50% of each color.
    • A. 

      True

    • B. 

      False

  • 10. 
    Which one of the following types of mutations causes death, often before the fetus is born?
    • A. 

      Map unit mutation

    • B. 

      Germ-cell mutation

    • C. 

      Lethal mutation

    • D. 

      Somatic-cell mutation

    • E. 

      Translocation mutation

  • 11. 
    A ______  ______  is a diagram that shows the linear order of genes on a chromosome. Alfred H. Sturtevant, one of Thomas Hunt Morgan's students, made the first for fruit flies.
  • 12. 
    The percentage of crossing-over for two traits is proportional to the distance between them on a chromosome. Sturtevant defined one _____  _____  as a frequency of crossing-over of 1%.
    • A. 

      Map unit

    • B. 

      Gene unit

    • C. 

      Mutation unit

    • D. 

      Linked unit

    • E. 

      Deletion unit

  • 13. 
    A _____  _____ is the addition, substitution, or removal of a single nucleotide.
    • A. 

      Point mutation

    • B. 

      Frameshift mutation

    • C. 

      Substitution mutation

    • D. 

      Insertion mutation

    • E. 

      Gene mutation

  • 14. 
    If a normal DNA has C T T which codes for Glutamic acid.  If Thymine is replaced with Adenine, CAT which codes for Valine.  Which type fo mutation is represented?
    • A. 

      Point mutation

    • B. 

      Frameshift mutation

    • C. 

      Substitution mutation

    • D. 

      Insertion mutation

    • E. 

      Gene mutation

  • 15. 
    When one or more nucleotides in a gene are lost, this is called a(n) _____  _____.
    • A. 

      Point mutation

    • B. 

      Frameshift mutation

    • C. 

      Substitution mutation

    • D. 

      Insertion mutation

    • E. 

      Deletion mutation

  • 16. 
    When one or more nucleotides are added to a gene it is a called point mutation.
    • A. 

      True

    • B. 

      False

  • 17. 
    When one or more nucleotides in a gene are added or lost in a gene. A _____  _____ in turn, can have a disastrous effect on the protein's function.
    • A. 

      Point mutation

    • B. 

      Frameshift mutation

    • C. 

      Substitution mutation

    • D. 

      Insertion mutation

    • E. 

      Deletion mutation

  • 18. 
    In a male mammal, the Y chromosome contains a gene called SRY for ____-_____ _____  _____. This gene codes for a protein that causes the gonads of an embryo to develop as testes.
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