Assertion: Persons suffering from haemophilia | vedclass

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(C) Haemophilia is a sex-linked recessive disorder caused by the deficiency of blood clotting factor $VIII$ (Haemophilia $A$) or factor $IX$ (Haemophi

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If the Assertion is correct but Reason is incorrect.

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(C) Haemophilia is a sex-linked recessive disorder caused by the deficiency of blood clotting factor $VIII$ (Haemophilia $A$) or factor $IX$ (Haemophilia $B$).In patients with haemophilia,the blood clotting mechanism is impaired because the cascade of reactions required for fibrin formation is interrupted due to the absence of these specific clotting factors.The Assertion is correct because haemophilia is indeed characterized by the failure to produce functional clotting factor $VIII$.The Reason is incorrect because the primary defect in haemophilia is not a low concentration of platelets or a deficiency in prothrombin production; rather,it is a genetic deficiency of specific clotting factors. Platelet counts in haemophiliacs are typically normal.

Assertion: Persons suffering from haemophilia fail to produce blood clotting factor $VIII$.
Reason: Prothrombin producing platelets in such persons are found in very low concentration.

Similar Questions

Which of the following is an example of qualitative inheritance?

Select the correct match.

Which of the following is a sex-linked character?

Pick out the correct statements.
$(1)$ Haemophilia is a sex-linked recessive disease.
$(2)$ Down's syndrome is due to aneuploidy.
$(3)$ Phenylketonuria is an autosomal recessive gene disorder.
$(4)$ Sickle cell anaemia is an $X$-linked recessive gene disorder.

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Assertion: Persons suffering from haemophilia fail to produce blood clotting factor $VIII$.Reason: Prothrombin producing platelets in such persons are found in very low concentration.