DNA/Heredity

S. McLaughlin

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  1. The scientific study of heredity is called

    2. Your answer:
    selective breeding
    genetics
    inheritance research
    Mendelian studies

  2. Pure breeding pea plants always

    3. Your answer:
    the offspring of the prental (P) generation
    are pollinated by hand
    produce offspring with only one form of a trait
    produce offspring with either form of a trait

  3. Members of each pair of alleles seperate when

    4. Your answer:
    growth and development occur
    traits are expressed
    mitosis occurs
    gametes are formed

  4. One major reason that pea plants were a good choice for Mendel's studies was because the plant

    5. Your answer:
    required a large space for growth
    can be eaten
    displayed several traits in contrasting form
    had only one trait with several forms

  5. What color would a flower with the alleles Pp be (P=purple p=white)

    6. Your answer:
    a lighter shade of purple
    purple
    white
    a mix of white and purple

  6. If an individual posesses one of each allele for the same trait, the individual is said to be

    7. Your answer:
    homozygous for the trait
    heterozygous for the trait
    codominant
    haploid for the trait

  7. A cross between an individual heterozygous for a trait and an individual recessive for the trait will can produce offspring with

    8. Your answer:
    three different genotypes
    all the same characterstics
    all the same genotype
    two different genotypes

  8. People with Down syndrome have

    9. Your answer:
    45 chromosomes
    46 chromosomes
    no X chromosomes
    47 chromsomes

  9. The coat of a roan horse is made up of red and white hairs. Their genotype has alleles for both red and white hair color. This is an example of

    10. Your answer:
    incomplete dominance
    multiple alleles
    codominance
    a polygenic trait

  10. Humans can have blood phenotypes of A, AB, B or O The four blood types result from

    11. Your answer:
    codominance
    incomplete dominance
    a polygenic trait
    multiple alleles

  11. The inheritance of the human traits such as height, weight, and body build are controlled by more than one set of alleles. Each trait is an example of

    12. Your answer:
    a polygenic trait
    codominance
    incomplete dominance
    sex- linked inheritance

  12. An organism of the genotype TtRr can make gametes of all the following kinds except:

    13. Your answer:
    tR
    TR
    Rr
    tr

  13. If TtRR is crossed with TTRr, what proportion of the offspring would be expected to be ttrr?

    14. Your answer:
    1/4
    None
    Not enough information
    1/8

  14. If the offspring of a cross show a 9/16, 3/16, 3/16, 1/16 (9:3:3:1) ratio, the parents of the cross have the genotypes

    15. Your answer:
    AB x ab
    AABB x aabb
    AaBb x AaBb
    not enough information

  15. According to Mendel's law of independent assortment, Genes that assort independently do so because they are

    16. Your answer:
    located on different chromosomes
    located on the same chromosome
    are mutations
    dominant

  16. Crossing a homozygous red flower with a homozygous white flower produces only pink offspring. This is an example of:

    17. Your answer:
    a polygenic trait
    codominance
    multiple alleles
    incomplete dominance

  17. A human with the genotype XY is

    18. Your answer:
    a female
    carring an extra chromosome
    a dwarf
    a male

  18. If P = purple flower, p = white flower and T= tall plants, t = short plants, ppTt represents a plant that is

    19. Your answer:
    white and tall
    white and short
    purple and tall
    purple and short

  19. Dad is color blind, mom is a carrier for colorblindness. Which of the following is an accurate statement of the probability for colorblind kids?

    20. Your answer:
    100% of the boys wil be colorblind
    75% of the kids will be colorblind.
    50% of the boys and 50% of the girls will be colorblind
    100% of the girls will be colorblind

  20. Gregor Johanne Mendel did his work around the years in the:

    21. Your answer:
    Late 1700's
    1950's
    1920's
    Late 1800's

  21. Which of the following is/are true of mutations?

    22. Your answer:
    Most are niether good or bad
    They can be beneficial
    All of these
    We all probably carry some

  22. A person with the karyotype 47XX +21 is

    23. Your answer:
    is a boy with klinfelters
    A girl with an extra sex chromosome
    A colorblind male
    A girl with Down syndrome

  23. A Woman with Type A blood marries a Guy that is type O. Which of the following blood types can their kid NOT have?

    24. Your answer:
    Type B blood
    Not enough information.
    Type O blood
    Type A blood

  24. A pedigree is

    25. Your answer:
    a cure for genetic disorders.
    a special type of karyotype.
    A super tasty dog food with extra DNA in each chunk!
    a tool to trace a trait through a family's generations.

  25. One quality that most improved the value of Mendel's studies on pea plant genetics was his:

    26. Your answer:
    His use of detailed notes and a mathematical approach.
    The study of more than one trait.
    His drawings of pea plants.
    Use of self fertilization.

    Look at the picture of the karyotype

  26. This is a karyotype which shows

    27. Your answer:
    a person missing one of each sex chromosome.
    an abnormal female
    would show the notation "23 XY"
    a normal female.

    Pedigree

  27. Which of the following is true of this pedigree

    28. Your answer:
    It shows a recessive trait.
    The title is wrong because not enough people have the disorder
    The trait is sex linked
    It shows a dominant trait

  28. After reading the passage, which one of the following is a possiblity for the sequence 'GATTACA' mentioned in the article?

    29. Links to reference material:
    Gattaca - real or fake?

    Your answer:
    It codes for the flight patterns of sweat bees.
    One of 180,000 or so strings of nucelotides in humans
    It codes for a specific protein for intelligence
    It is a very important regulatory sequence.

  29. Read the information about Turner Syndrome. How does one get Turner syndrome?

    30. Links to reference material:
    turner Syndrome

    Your answer:
    It is a random event carried on an X chromosome.
    They think it came from monkeys and early primates.
    A karyotype procedure.
    From environmental exposure

  30. Pharmacogenomics is the study of how a person will react to a drug based on their genetic background. Read the article. Why is pharmacogenomics an important area of study?

    31. Links to reference material:
    pharmacogenomics

    Your answer:
    pharmacogenomics will make a lot of money.
    pharmacogenomics can indicate whether or not a patient can tolerate a certain drug.
    pharmacogenomics will cure all diseases in the future.
    pharmacogenomics creates new drugs through genetic engineering

  31. Two organisms showing a dominant trait phenotypically can have an offspring that has the recessive trait.

    32. Your answer:
    TrueFalse

  32. ALD is a sex linked trait. This means that boys are carriers and girls have it on both X chromosomes.

    33. Your answer:
    TrueFalse

  33. Codominance is when two traits are blended, i.e. red + white = pink flowers.

    34. Your answer:
    TrueFalse

  34. A person with Type A blood can have a child with type O blood.

    35. Your answer:
    TrueFalse

  35. A mutation causes new chromosomes to form.

    36. Your answer:
    TrueFalse

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