Body Fluids and Circulation Question 92
92. Haemophilia is
[1989]
(a) royal disease
(b) faulty blood clotting
(c) both
(a) and
(b)
(d) mosquito having haemocoel
Show Answer
Answer : c
Hints & Solutions
(c) Haemophilia is a sex linked disease (linked with X chromosomes). In this disease, blood lacks the thromboplastin protein which causes blood clotting during injury. In normal human, blood clots in 2-6 min. While in haemophilic human, it may take from $3 hrs$ to 24 hrs due to which death may occur. Hemophilia disease was Ist discovered by Jon Catto in 1803. The most famous families in which the inheritance of this disease was found were the Royal families of Britain & Russia, so it is also called Royal disease.
