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hemophilia
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Transmission of hemophilia (A) Mating of affected hemophilic man and normal womanā€”all sons normal, all daughters carriers. (B) Mating of carrier woman and normal manā€”half of sons normal and half affected; half of daughters carriers, half normal. family pedigree
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Transmission of hemophilia (A) Mating of affected hemophilic man and normal womanā€”all sons normal, all daughters carriers. (B) Mating of carrier woman and normal manā€”half of sons normal and half affected; half of daughters carriers, half normal.
Transmission of hemophilia

(A) Mating of affected hemophilic man and normal womanā€”all sons normal, all daughters carriers. (B) Mating of carrier woman and normal manā€”half of sons normal and half affected; half of daughters carriers, half normal.

hemophilia

bleeding disorder
Also known as: haemophilia
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Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....
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ā€¢History

hemophilia, hereditary bleeding disorder caused by a deficiency of a substance necessary for blood clotting (coagulation). In hemophilia A, the missing substance is factor VIII. The increased tendency to bleeding usually becomes noticeable early in life and may lead to severe anemia or even death. Large bruises of the skin and soft tissue are often seen, usually following injury so trivial as to be unnoticed. There may also be bleeding in the mouth, nose, and...

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