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STD 12 - 4. principal of inheritance and variation — Biology STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceBiologySTD 12 - 4. principal of inheritance and variation1 Mark
MCQ
Haemophilia $A$ is due to the absence of
  • ✓
    Antihaemophilic globulin
  • B
    Calcium
  • C
    Plasma thromboplastin
  • D
    $X$ chromosome
✓

Answer

Correct option: A.
Antihaemophilic globulin
a
(a)Haemophilia -$A$ characterized by lack of antihaemophilic globulin (Factor $VIII$). About four fifths of the cases of haemophilia are of this type.

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