Hemophilia is a sex-linked disorder that is caused by a defective gene on the X chromosome. What will be the pattern of inheritance of the offspring of a hemophiliac father?
Hemophilia is considered a sex-linked recessive disorder which means the disease does not occur if only one gene in a pair is abnormal.
Inheritance pattern of the offspring of a father who has hemophilia and a mother who does not have hemophilia and is not a carrier: - all sons will be born normal - all daughters will be carriers
Inheritance pattern of the offspring of a father who has hemophilia and a mother who is a carrier: - 25% chance of having a hemophiliac son - 25% chance of having a son with no hemophilia - 25% chance of having a daughter who is a carrier - 25% chance of having a hemophiliac daughter
