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Haemophiliac is the bleeders disorder in which the blood delay or fail to clot at all. This disease caused by defficiency of factor VIII or IX which help in the blood clot after injury. The factor are manufactured in the liver in other hand alternation in the liver can causes haemophiliac disorder. Haemophiliac is a disorder control by a recessive gene (h) . Female haemophiliac are rare compare with the male haemophiliac due to the following reasons;-

(a) Most of female haemophiliac died during their first period (Menstruation) due to excessive loss of blood from the body where by they mostly never grow.

(b) In order a female to develop haemophiliac disorder require two recessive gene (h) which is less probability compared with a male who require only one.

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