Hemophilia is usually an inherited bleeding disorder in which the blood does not clot properly. Hemophilia is caused by a mutation in one of the genes, that provides instructions for making the clotting factor proteins needed to form a blood clot. These genes are located on the X chromosome. A female with one affected X chromosome is a carrier of hemophilia. Select all that apply. Question options: Hemophilia is X-linked. Blood clotting is polygenic. Hemophilia is a recessive allele. Hemophilia is a dominant allele. Chromosomal males inherit an X from their father. Chromosomal males inherit an X from their mother. Hemophilia is autosomal.
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Hemophilia is caused by mutations in genes located on the X chromosome, which indicates that it is an X-linked disorder. Show more…
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Hemophilia is a hereditary disease that prevents a person's blood from clotting correctly. The gene responsible for blood clotting is located on the X chromosome of the sex chromosome pair (X and Y). This is called X-linked inheritance. The dominant gene is H, and the recessive gene causing hemophilia is h. Anyone with the dominant gene will not inherit hemophilia. The mother (X^h, X^H) and father (X^H and Y) have children X^H X^H, H^H X^h, X^H Y, and X^h Y. What are the chances of a child having hemophilia? Why?
Madhur L.
Hemophilia is a recessive inherited blood disorder. Hemophiliacs can't form blood clots. While minor cuts aren't usually a problem, hemophiliacs have significant problems with internal bleeding. The gene for hemophilia A is on the X chromosome. A woman who is a carrier for hemophilia (she has the allele but not the trait) has children with a normal (non-hemophiliac) man. What will be the genotypes and phenotypes of their offspring? Show your work (a Punnett square will be helpful here!).
Sri K.
Hemophilia is caused by a sex-linked recessive allele. This means that women can be carriers but cannot get hemophilia. The gene is found on the X chromosome. A man can give the allele to his daughter but not to his son. A son who has hemophilia inherited the allele from his mother.
Adi S.
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