Of a normal couple,half the sons are haemophi | vedclass

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(C) Haemophilia is an $X-$linked recessive disorder.Let the normal allele be $X^H$ and the haemophilic allele be $X^h$.If the mother is a carrier $(X^

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One $X-$chromosome of mother

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(C) Haemophilia is an $X-$linked recessive disorder.Let the normal allele be $X^H$ and the haemophilic allele be $X^h$.If the mother is a carrier $(X^H X^h)$ and the father is normal $(X^H Y)$,the cross is as follows:$X^H X^h 	imes X^H Y$Offspring genotypes: $X^H X^H$ (normal daughter),$X^H X^h$ (carrier daughter),$X^H Y$ (normal son),$X^h Y$ (haemophilic son).In this scenario,$50\%$ of the sons are haemophilic and $50\%$ of the daughters are carriers.Therefore,the gene is located on one $X-$chromosome of the mother.

Of a normal couple,half the sons are haemophilic while half the daughters are carriers. The gene is located on $:-$

Similar Questions

Which of the following statements is incorrect regarding $Hemophilia$?

If all the sons are haemophilic and all the daughters are normal when a haemophilic father mates with a normal mother,this character is:

Assertion $(A) :$ Phenylketonuria is an inborn error of metabolism and inherited as the autosomal dominant trait.
Reason $(R) :$ The disease is caused by mutation in the gene that codes for the enzyme phenylalanine hydroxylase.

Select the correct options for the given statements:
Statements:
$X$: Formation of Haemoglobin is controlled by two closely linked genes $HBA1$ and $HBA2$ on chromosome $16$ of each parent.
$Y$: $\beta$-Thalassemia is controlled by a single gene $HBB$ on chromosome $21$ of each parent.

Marriages between close relatives and cousins are not advisable because

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