Pedigree Chart Analysis (GF)
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by Kathy Egbert
| 10 Questions
Queen Victoria's Family
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1
1
Victoria's youngest child, Beatrice, had one daughter, one normal son, and two sons with hemophilia. Beatrice's daughter, Eugenie, married King Alfonso XIII of Spain. They had six children, one of whom was the father of Juan Carlos, King of Spain. What is Juan Carlos's phenotype?
C hemophilic
A normal
B carrier
2
1
Victoria's daughter, Alice, had a daughter, Alix, who carried the defective allele into the royal Russian family when she married Tsar Nicholas II. They had four daughters and one son, Alexis. Alexis had hemophilia. The entire family was murdered during the Russian Revolution. What is the probability that one of Alexis's sisters was a carrier?
A 3:1or 25%
C 4:0 or 100%
B 1:1 or 50%
D None of his sisters can be carriers.
3
1
What is the probability that all four of Alexis's sisters are carriers?
A 1 in 4
C 1 in 16
D None of Alexis's sisters are carriers.
B 1 in 8
4
1
If Alexis had lived and married a normal woman and they had a daughter, what is the probability that his daughter would have hemophilia?
C 50% chance
A None of his daughters would have hemophilia.
B 25% chance
D 75% chance
5
1
If Alexis had lived and married a normal woman and they had a son, what is the probability that a son would have hemophilia?
A None of his sons would have hemophilia.
C 50% chance
D All of his sons would have hemophilia.
B 25% chance
6
1
Is it possible for a female to have hemophilia?
A True
B False
7
1
The next generation of the present British royal family--William and Harry--are carriers for hemophilia.
A True
B False
8
1
The sex chromosome(s) in male mammal's gametes (sperm) is/are
C either an X or a Y
A only X
B only Y
9
1
The sex chromosome(s) in a female mammal's gamete (egg) is/are
A only X
B only Y
C either an X or a Y
10
1
The half shaded in circles represents a
A male carrier for hemophilia.
D female who has hemophilia.
C male who has hemophilia.
B female carrier for hemophilia.
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