Answer: It has to do with the genetic differences between males and females.
If the woman only carries it on one X chromosome, she can pass on the condition but does not have it herself as it is a recessive gene and would be dominated by the corresponding dominant trait on her other X chromosome.
But females can indeed inherit the traits for hemophilia, but they generally do not survive to adulthood. If they carry the hemophilia gene on both their X chromosomes they generally bleed to death around the onset of menarche.
Answer: In modern times, Queen Victoria of England, in the 19th century, was a carrier of the gene. In those days, the European monarchies were inter-related, with offspring married to others around the continent. She also was the longest serving British monarch-over 60 years! One of her off-springs, was the Tsar Nicholas II of Russia. His only son, Alexei, was born with hemophelia. Only males were prone to get the disease.
Answer: Well my friend Lexie has Hemophilia and the doctors predict that if she stays on her medication she will live a forever. But some hemophilia sufferers are not so lucky,so get to a doc to check it out so you know if you will be superhuman, like Lexie, and live forever!
Answer: Prior to 1985, there were no laws enacted within the U.S. to screen blood. As a result, many haemophilia patients who received untested and unscreened clotting factor prior to 1992 were at an extreme risk for contracting HIV and hepatitis C via these blood products. It is estimated that more than 50% of the haemophilia population, over 10,000 people, contracted HIV from the tainted blood supply in the United States alone. The main symptom of hemophilia is bleeding. Mild cases may go unnoticed until later in life, when they occur during surgery or after trauma. In more severe cases, serious bleeding may occur without any cause. Internal bleeding may occur anywhere. Bleeding into joints is common.A small percentage of people with hemophilia may die from severe bleeding.http://www.nlm.nih.gov/medlineplus/ency/article/000537.htm http://en.wikipedia.org/wiki/Hemophilia#Blood_contamination_issues
Answer: The disease hemophilia results in a lack of functional clotting proteins, the chemicals that form a scab when a person sustains a cut. If the blood is not able to clot properly a person could suffer exsanguination (death due to blood loss) from a minor cut or injury.
Answer: Yes. People with hemophilia can have kids. Hemophilia in no way impacts the reproductive organs or process. If the person having children is a male with hemophilia, all of his daughters will have the trait on one of her X chromosomes. A male with hemophilia will not pass the trait on to his sons as he passes only a Y chromosome on to them and not his X.
Depending on the actual genetics of the female with hemophilia (if she has a mutation on either a single X chromosome or both X chromosomes) she will either transfer the trait to either half of her children regardless of sex (in the case of a single X) or to all of her children (if both Xs have a mutation). More importantly a female with lower clotting factor levels due to hemophilia should be monitored closely as the trauma involved in the birthing process can be severe and as with any trauma to a hemophiliac, it can be more serious and prompt medical action.
Answer: Hemophilia is a mutation of either of the genes that make factor VII or IX. Hemophilia A is a mutation of the F8 gene and Hemophilia B is the mutation of the F9 gene. Both of these mutations occur on the sex-linked X chromosome.
Answer: The gene for hemophilia is carried on the X chromosome. A male has one X and one Y. Since the trait is recessive it would be easier for a male to get a recssive allele, rather than a female get two recessive alleles.
Answer: Hemophilia is passed down from mother to son. It is extremely rare for a woman to have hemophilia. It is necessary, though, for a woman to be a carrier of the disorder for her son to acquire this disorder. Females have two X chromosomes whereas males only have one. When a boy is born, he takes one X chromosome from his mother and one Y chromosome from his father. Therefore, he can only get hemophilia through his mother. Example One: Mother(Carrier)+Father(Non-Affected)=50% chance of their son acquiring the disorder and 50% chance of their daughter being a carrier. Example Two: Mother(Non-Affected)+Father(Hemophiliac)=All sons will be non-affected and all daughters will be carriers.