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4.Principles of Inheritance and Variation
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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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