D. X-linked inheritance 1. Red-green colorblindness is a recessive X -linked trait in humans. In the problems below, represent the dominant allele using x 0 and the recessive allele using x 6 . (a) If a colorblind man has a child with a homozygous dominant woman, what is the probability that they will have a colorblind daughter? What is the probability that they will have a colorblind son? (b) If a man with normal sight has a child with a heterozygous woman, what is the probability that they will have a colorblind daughter? (c) What is the probability that they will have a colorblind son? Hemophilia is a recessive condition inherited on the X chromosome. Hemophilia was common in the royal families of Europe. For example, Prince Leopold, Duke of Albany had hemophilia. He married Princess Helene Friederike of the Netherlands, who was not a carrier of hemophilia and did not have the disease. The couple had two children, Alice and Charles Edward. (a) What is the probability that Alice had hemophilia? What is the probability that she was a carrier for hemophilia? b) What is the probability that Charles Edward had hemophilia? What is the probability that he was a carrier for hemophilia? (c) An A B child from the marriage of an O mother and an A father? Name (d) An O child from the marriage of an A B father and an A mother? (e) An A child from the marriage of an A B father and a B mother? 3. A woman of blood group A B marries a man of blood group A whose father was group O . What is the probability that: (b) One child will be blood type B and the other blood type O? characters violate this principle.
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D- X-linked inheritance 1- Red-green colorblindness is a recessive X-l.docx
1. D. X-linked inheritance 1. Red-green colorblindness is a recessive X -linked trait in humans. In
the problems below, represent the dominant allele using x 0 and the recessive allele using x 6 .
(a) If a colorblind man has a child with a homozygous dominant woman, what is the probability
that they will have a colorblind daughter? What is the probability that they will have a colorblind
son? (b) If a man with normal sight has a child with a heterozygous woman, what is the
probability that they will have a colorblind daughter? (c) What is the probability that they will
have a colorblind son? Hemophilia is a recessive condition inherited on the X chromosome.
Hemophilia was common in the royal families of Europe. For example, Prince Leopold, Duke of
Albany had hemophilia. He married Princess Helene Friederike of the Netherlands, who was not
a carrier of hemophilia and did not have the disease. The couple had two children, Alice and
Charles Edward. (a) What is the probability that Alice had hemophilia? What is the probability
that she was a carrier for hemophilia? b) What is the probability that Charles Edward had
hemophilia? What is the probability that he was a carrier for hemophilia? (c) An A B child from
the marriage of an O mother and an A father? Name (d) An O child from the marriage of an A B
father and an A mother? (e) An A child from the marriage of an A B father and a B mother? 3. A
woman of blood group A B marries a man of blood group A whose father was group O . What is
the probability that: (b) One child will be blood type B and the other blood type O? characters
violate this principle.
