1.

What is hemophilia?

A. It is a disease caused by the absence of genes responsible for the factors that cause blood clotting.
B. It is a disease in which white blood cells become cancerous and eliminate RBCs in blood.
C. It is a disease that is caused by vitamin deficiency.
D. It is a disease in which extra hemoglobin is produced.
Answer» B. It is a disease in which white blood cells become cancerous and eliminate RBCs in blood.


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