Article
Article
Hemophilia
Article By:
Hougie, Cecil School of Medicine, University of California, San Diego, California.
Last reviewed:November 2020
DOI:https://doi.org/10.1036/1097-8542.313900
Show previous versions
- Hemophilia, published June 2014:Download PDF
Get Adobe Acrobat Reader
A rare, hereditary blood disorder marked by a tendency toward excessive bleeding. Hemophilia is an inherited condition in which the blood clots slowly or not at all. It predominantly occurs in males and is transmitted as a sex-linked mendelian recessive trait (see illustration). The defective gene responsible for hemophilia is located on the X chromosome (one of the two sex chromosomes). Historically, Queen Victoria was a carrier, and several of her male descendants were affected. See also: Blood; Chromosome; Gene; Hematologic disorders; Human genetics; Sex chromosomes; Sex-linked inheritance
The content above is only an excerpt.
About AccessScience
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 46 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information
