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Questions and Answers
What is the probability that sons of an affected man and a carrier mother will be affected by an X-linked recessive disease?
What is the probability that sons of an affected man and a carrier mother will be affected by an X-linked recessive disease?
- 25%
- 75%
- 100%
- 50% (correct)
Which of the following is NOT an X-linked recessive disease?
Which of the following is NOT an X-linked recessive disease?
- Marfan syndrome (correct)
- Fragile X syndrome
- Lesch Nyhan syndrome
- Wiscott-Aldrich syndrome
If a daughter of an affected man inherits his mutated X chromosome, what is the potential outcome?
If a daughter of an affected man inherits his mutated X chromosome, what is the potential outcome?
- She will be affected.
- She will have a 75% chance of being affected.
- She will be a carrier. (correct)
- She will be unaffected.
Which of the following diseases exhibits X-linked recessive inheritance?
Which of the following diseases exhibits X-linked recessive inheritance?
What is the probability that sons of an affected man and an affected mother will be affected by an X-linked recessive disease?
What is the probability that sons of an affected man and an affected mother will be affected by an X-linked recessive disease?
How do daughters of an affected man and carrier mother differ in their outcomes in X-linked recessive inheritance?
How do daughters of an affected man and carrier mother differ in their outcomes in X-linked recessive inheritance?
Why can affected fathers not pass X-linked recessive traits to their sons?
Why can affected fathers not pass X-linked recessive traits to their sons?
Why are X-linked recessive traits more commonly expressed in males than in females?
Why are X-linked recessive traits more commonly expressed in males than in females?
What happens when a female is a carrier for an X-linked recessive disorder?
What happens when a female is a carrier for an X-linked recessive disorder?
Why does male-to-male transmission of X-linked recessive traits not occur?
Why does male-to-male transmission of X-linked recessive traits not occur?
How many mutated X chromosomes do females need to be affected by an X-linked recessive trait?
How many mutated X chromosomes do females need to be affected by an X-linked recessive trait?
Why are males who inherit an affected X chromosome from their mother more likely to exhibit X-linked recessive traits?
Why are males who inherit an affected X chromosome from their mother more likely to exhibit X-linked recessive traits?
What is true about X-linked dominant inheritance?
What is true about X-linked dominant inheritance?
Which of the following statements is correct regarding X-linked dominant inheritance?
Which of the following statements is correct regarding X-linked dominant inheritance?
In X-linked dominant inheritance, if the father is affected by a disorder, which offspring will be affected?
In X-linked dominant inheritance, if the father is affected by a disorder, which offspring will be affected?
What happens if a mother with an X-linked dominant disorder has a son?
What happens if a mother with an X-linked dominant disorder has a son?
Which of the following is NOT a characteristic of X-linked dominant inheritance?
Which of the following is NOT a characteristic of X-linked dominant inheritance?
In X-linked dominant inheritance, what is the inheritance pattern when both parents have the disorder?
In X-linked dominant inheritance, what is the inheritance pattern when both parents have the disorder?
Flashcards
What is the probability that sons of an affected man and a carrier mother will be affected by an X-linked recessive disease?
What is the probability that sons of an affected man and a carrier mother will be affected by an X-linked recessive disease?
A male child will have a 50% chance of inheriting the mutated X chromosome from his mother and thus develop the disease. This is because he will receive either his mother's mutated X or his father's normal X.
Which of the following is NOT an X-linked recessive disease?
Which of the following is NOT an X-linked recessive disease?
Marfan syndrome is an autosomal dominant disorder, meaning it's not linked to the X chromosome.
If a daughter of an affected man inherits his mutated X chromosome, what is the potential outcome?
If a daughter of an affected man inherits his mutated X chromosome, what is the potential outcome?
A daughter of an affected man will always inherit the father's mutated X chromosome, but since she also receives a normal X from the mother, she becomes a carrier.
Which of the following diseases exhibits X-linked recessive inheritance?
Which of the following diseases exhibits X-linked recessive inheritance?
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What is the probability that sons of an affected man and an affected mother will be affected by an X-linked recessive disease?
What is the probability that sons of an affected man and an affected mother will be affected by an X-linked recessive disease?
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How do daughters of an affected man and carrier mother differ in their outcomes in X-linked recessive inheritance?
How do daughters of an affected man and carrier mother differ in their outcomes in X-linked recessive inheritance?
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Why can affected fathers not pass X-linked recessive traits to their sons?
Why can affected fathers not pass X-linked recessive traits to their sons?
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Why are X-linked recessive traits more commonly expressed in males than in females?
Why are X-linked recessive traits more commonly expressed in males than in females?
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What happens when a female is a carrier for an X-linked recessive disorder?
What happens when a female is a carrier for an X-linked recessive disorder?
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Why does male-to-male transmission of X-linked recessive traits not occur?
Why does male-to-male transmission of X-linked recessive traits not occur?
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How many mutated X chromosomes do females need to be affected by an X-linked recessive trait?
How many mutated X chromosomes do females need to be affected by an X-linked recessive trait?
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Why are males who inherit an affected X chromosome from their mother more likely to exhibit X-linked recessive traits?
Why are males who inherit an affected X chromosome from their mother more likely to exhibit X-linked recessive traits?
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What is true about X-linked dominant inheritance?
What is true about X-linked dominant inheritance?
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Which of the following statements is correct regarding X-linked dominant inheritance?
Which of the following statements is correct regarding X-linked dominant inheritance?
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In X-linked dominant inheritance, if the father is affected by a disorder, which offspring will be affected?
In X-linked dominant inheritance, if the father is affected by a disorder, which offspring will be affected?
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What happens if a mother with an X-linked dominant disorder has a son?
What happens if a mother with an X-linked dominant disorder has a son?
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Which of the following is NOT a characteristic of X-linked dominant inheritance?
Which of the following is NOT a characteristic of X-linked dominant inheritance?
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In X-linked dominant inheritance, what is the inheritance pattern when both parents have the disorder?
In X-linked dominant inheritance, what is the inheritance pattern when both parents have the disorder?
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