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Inheritance Pattern of Hemophilia

The following diagrams show how the hemophilia gene can be inherited. It is important to note that in one-third of people with hemophilia, there is no family history of the disorder.

Mother is a carrier

  • 50% chance that each son will have hemophilia.
  • 50% chance that each daughter will be a carrier of the hemophilia gene.

Father has hemophilia

  • All daughters will carry the hemophilia gene.
  • No sons will have hemophilia.
Hemophilia Inheritance Mother
Hemophilia Inheritance Father

Mother is a carrier AND
Father has hemophilia

  • 50% chance that each son will have hemophilia.
  • 50% chance that each daughter will be a carrier of the hemophilia gene.
  • 50% chance that each daughter will have hemophilia.

Hemophilia Inheritance Both Parents




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