Sex-Linked Traits
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12 QuestionsShow answers
  • Question 1
    30 seconds
    Q.

    In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R X r ?

    answer choices

    male with white eyes

    female with red eyes

    male with red eyes

    female with white eyes

  • Question 2
    30 seconds
    Q.

    In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R Y ?

    answer choices

    male with white eyes

    female with white eyes

    male with red eyes

    female with red eyes

  • Question 3
    30 seconds
    Q.

    In fruit flies, eye color is a sex linked trait. Red is dominant to white. What is the sex and eye color of flies with the following genotype: X R X R ?

    answer choices

    male with red eyes

    female with red eyes

    male with white eyes

    female with white eyes

  • Question 4
    30 seconds
    Q.

    In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X r Y ?

    answer choices

    male with red eyes

    female with red eyes

    male with white eyes

    female with white eyes

  • Question 5
    30 seconds
    Q.

    What are the genotypes of these flies:


    white eyed, male ?

    answer choices

    X R X r

    X R X R

    Xr X r

    X r Y

    XR Y

  • Question 6
    30 seconds
    Q.

    What are the genotypes of these flies:


    white eyed, female ?

    answer choices

    X R X r

    X R X R

    Xr X r

    X r Y

    X R Y

  • Question 7
    30 seconds
    Q.

    What are the genotypes of these flies:


    red eyed female (heterozygous) ?

    answer choices

    X R X r

    X R X R

    Xr X r

    X r Y

    X R Y

  • Question 8
    30 seconds
    Q.

    What are the genotypes of these flies:


    red eyed, male ?

    answer choices

    X R X r

    X R X R

    Xr X r

    X r Y

    X R Y

  • Question 9
    30 seconds
    Q.

    In a cross between a pure red eyed female and a white eyed male, what would the genotypes of the parents be?

    answer choices

    XRXr with XR Y

    XRXr with Xr Y

    XRXR with XR Y

    XRXR with Xr Y

    XrXr with Xr Y

  • Question 10
    30 seconds
    Q.

    Look at this cross: XB XB x Xb Y

    What proportion/percent of the male children are colorblind?

    answer choices

    100%

    75%

    25%

    0%

  • Question 11
    30 seconds
    Q.

    Look at this cross: XBXb x XBY


    What proportion of the male children are colorblind?

    answer choices

    100%

    75%

    50%

    25%

  • Question 12
    30 seconds
    Q.

    H= normal blood clotting

    h=hemophilia


    XHXh x XHY


    What is the probability that any of their offspring will have hemophilia?

    answer choices

    4/4

    3/4

    2/4

    1/4

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