(C) Haemophilia is an $X$-linked recessive disorder. Let $X^h$ represent the haemophilic allele and $X$ represent the normal allele.The genotype of a

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(C) Haemophilia is an $X$-linked recessive disorder. Let $X^h$ represent the haemophilic allele and $X$ represent the normal allele.The genotype of a haemophilic female is $X^h X^h$ and a normal male is $XY$.When they cross: $X^h X^h \times XY$.The possible genotypes of the offspring are $X^h X$ (carrier daughter) and $X^h Y$ (haemophilic son).Therefore,all sons will be haemophilic,and all daughters will be carriers.

Class 12 Biology Principles of Inheritance and Variation Pedigree Analysis and Mendelian disorders

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$A$ haemophilic female marries a normal male. What will be the theoretical ratio of their offspring regarding haemophilia?

A
All offspring are haemophilic
B
All girls are haemophilic
C
All sons are haemophilic
D
Half daughters and half sons are haemophilic

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Principles of Inheritance and Variation

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Pedigree Analysis and Mendelian disorders

In the given pedigree chart,which Mendelian disorder is represented?

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$A$ man and a woman who do not show any apparent symptoms of certain genetic diseases have seven children ($2$ daughters and $5$ sons). Three of the sons suffer from the given disease,but none of the daughters are affected. Which type of inheritance pattern do you suggest for this disease?

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What is the cause of haemophilia?

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$A$ haemophilic female marries a normal male. What will be the theoretical ratio of their offspring regarding haemophilia?

Similar Questions

In the given pedigree chart,which Mendelian disorder is represented?

$A$ man and a woman who do not show any apparent symptoms of certain genetic diseases have seven children ($2$ daughters and $5$ sons). Three of the sons suffer from the given disease,but none of the daughters are affected. Which type of inheritance pattern do you suggest for this disease?

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