Sex-Linked Inheritance
Biology ⇒ Genetics and Heredity
Sex-Linked Inheritance starts at 10 and continues till grade 12.
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See sample questions for grade 11
A man with genotype XHY (normal) and a woman with genotype XHXh (carrier) have a child. What is the probability that their daughter will be a carrier?
A man with hemophilia (XhY) marries a woman who is not a carrier (XHXH). What is the probability that their daughters will be carriers?
A man with normal vision (XCY) and a woman who is color blind (XcXc) have children. What is the probability that their daughters will be carriers?
A woman who is a carrier for an X-linked recessive disorder marries a man who is affected by the disorder. What is the probability that their daughter will be affected?
A woman who is a carrier for color blindness (XCXc) marries a man with normal vision (XCY). What is the probability that their son will be color blind?
A woman with genotype XDXd (where D is dominant and d is recessive) marries a man with genotype XdY. What is the probability that their child will express the dominant trait?
A woman with genotype XHXh (carrier for hemophilia) and a man with genotype XhY have a child. What is the probability that the child will have hemophilia?
Describe the difference between sex-linked and autosomal inheritance.
Describe the difference between X-linked dominant and X-linked recessive inheritance.
Describe the inheritance pattern of X-linked recessive traits in a pedigree.
Explain the concept of dosage compensation in mammals.
Explain why males are more likely to be affected by X-linked recessive disorders than females.
Explain why sex-linked traits are more commonly expressed in males than in females.
Explain why X-linked dominant disorders are often more severe in males than in females.
Explain why Y-linked traits are only passed from father to son.
Which chromosome pair determines the sex of a human individual?
Which sex chromosome is present in all human males but not in human females?
