WONDER #2734: What is Hemophilia?

Question 1 of 3

What was the main idea of this Wonder?

  1. Male humans have an X and a Y chromosome, while female have two X chromosomes.
  2. Hemophilia is a genetic condition in which a person’s blood is unable to clot properly.
  3. Hemophilia is very common and affects many people around the world.
  4. Treatment can improve the symptoms of hemophilia.

Question 2 of 3

Which statement about hemophilia is NOT true?

  1. Biological males are more likely to have hemophilia than are females.
  2. Hemophilia can cause bleeding into the joints, skin, or muscles after injury.
  3. There is only one type of hemophilia.
  4. About 400,000 people around the world are living with hemophilia.

Question 3 of 3

In a person with hemophilia, an issue with genes on the X chromosome can result in a lack of _____________.

  1. immune system
  2. blood
  3. stomach bile
  4. clotting factors

Check your answers online at https://wonderopolis.org/wonder/What-Is-Hemophilia.