4.Principles of Inheritance and Variation
normal

In which of the following disorder a single protein that is a part of the cascade of proteins involved in blood clotting is affected?

A

Thalassemia

B

Sickle-cell anaemia

C

Haemophilia

D

Phenylketonuria

Solution

Haemophilia $A$ $\rightarrow$ Blood clot factor $VIII'^{\text {th}}$ is absent 

Haemophilia $B$ $\rightarrow$ Blood clot factor $I X^{\text {th }}$ is absent

Standard 12
Biology

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