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13 June, 01:28

1. Barney and Betty are about to have their first child. They both have "normal" feet but Barney's father has flat feet and Betty has a child from a previous marriage who has flat feet, meaning they are both heterozygous for the trait. What is the probability that they will have a boy with flat feet (recessive trait) ?

A. 25%

B. 50%

C. 100%

D. 75%

2. humans, the ability to roll the tongue is a dominant trait. The inability to roll the tongue is a recessive trait. If two individuals homozygous recessive for this trait have a child, what is the chance that the child will be able to roll his tongue?

A. 100%

B. 0%

C. 50%

D. 25%

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Answers (1)
  1. 13 June, 04:40
    0
    These are the correct answers to the following questions:

    1. Barney and Betty are about to have their first child. They both have "normal" feet but Barney's father has flat feet and Betty has a child from a previous marriage who has flat feet, meaning they are both heterozygous for the trait. What is the probability that they will have a boy with flat feet (recessive trait) ?

    A. 25%

    B. 50%

    C. 100%

    D. 75%

    2. humans, the ability to roll the tongue is a dominant trait. The inability to roll the tongue is a recessive trait. If two individuals homozygous recessive for this trait have a child, what is the chance that the child will be able to roll his tongue?

    A. 100%

    B. 0%

    C. 50%

    D. 25%
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