Punnet Squares
3 years ago
drgillam
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14 QuestionsShow answers
  • Question 1
    900 seconds
    Q. A man, who has red-green colorblindness, and his wife, who is a carrier for colorblindness, have a colorblind son. What is the probability that their next son will also be colorblind?
    answer choices
    0%
    25%
    50%
    100%
  • Question 2
    900 seconds
    Q. A woman heterozygous for A blood marries a man heterozygous for B blood. What is the probability that they will produce offspring with AB blood?
    answer choices
    0%
    25%
    50%
    75%
  • Question 3
    900 seconds
    Q. What is the chance of two parents with blood types AB and O producing an offspring with blood type O?
    answer choices
    0%
    25%
    50%
    100%
  • Question 4
    900 seconds
    Q. Black hair color is dominant to white hair color in mice.  Determine the phenotypic ratio for the offpring of a heterozygous black mouse and a white mouse.
    answer choices
    4 Black: 0 White
    3 Black: 1 White
    2 Black: 2 White
    0 Black: 4 White
  • Question 5
    900 seconds
    Q. Genetic crosses involving a particular type of flower exhibit complete dominance with respect to petal color. Red (R) is dominant to white (r). Using the Punnett square, what is the expected percentage of offspring that will have white flowers from a cross of parent flowers with a genotype of Rr.
    answer choices
    0%
    25%
    50%
    100%
  • Question 6
    900 seconds
    Q. When a man has an allele combination Ww for a trait, what percentage of his gametes will have a dominant allele for that trait?
    answer choices
    25%
    50%
    75%
    100%
  • Question 7
    900 seconds
    Q. Red-green color blindness is an X-linked recessive trait. A red-green color-blind woman and a red-green color-blind man have a son. What is the probability that the son is also red-green color-blind?
    answer choices
    0%
    25%
    50%
    100%
  • Question 8
    900 seconds
    Q. A man with type O blood has children with a woman who is heterozygous for type A blood. What is the probability that their children will have type A blood?
    answer choices
    0%
    25%
    50%
    100%
  • Question 9
    900 seconds
    Q. In a certain species of rabbits, black coat color is dominant over brown coat color. What is the probability of producing a rabbit with brown coat color from two rabbits that are both heterozygous for black coat color?
    answer choices
    0%
    25%
    75%
    100%
  • Question 10
    900 seconds
    Q. Tay-Sachs disease is a lethal, autosomal recessive genetic disorder. If both parents are heterozygous carriers of the disease, what are the chances of them having a child who is also a heterozygous carrier for Tay-Sachs?
    answer choices
    0%
    25%
    50%
    75%
  • Question 11
    180 seconds
    Q.

    Biologists have found that a form of deafness is a recessive trait in dogs. If a female dog that is heterozygous for the trait mates with a male dog that is deaf, what percent of their offspring will be deaf?

    answer choices

    0%

    50%

    75%

    100%

  • Question 12
    900 seconds
    Q. Phenylketonuria (PKU) is inherited as a recessive condition. A man with PKU marries a woman without any alleles for PKU. What is the probability that their child will inherit PKU?
    answer choices
    0%
    25%
    50%
    75%
  • Question 13
    900 seconds
    Q. Scott was looking at the results of a cross between red and white flowers. Which is the most likely result of a cross that demonstrates incomplete dominance?
    answer choices
    0%
    50%
    75%
    100%
  • Question 14
    900 seconds
    Q. In certain species of plants, purple flowers (P) are dominant to white flowers (p). If two heterozygous plants are crossed, what will be the phenotype of the offspring?
    answer choices
    100% purple flowers
    100% white flowers
    75% white flowers, 25% purple flowers
    25% white flowers, 75% purple flowers
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