Your friend has haemophilia and was worried that he could pass it to his offspring when he had children. What would you tell him?

Question

Quizplus · Accepted Answer

Haemophilia is an X-linked disorder, meaning it is caused by mutations in genes on the X chromosome. Males only have one X chromosome, so if they inherit the mutated gene from their mother, they will have haemophilia. Females have two X chromosomes, so they would need to inherit the mutated gene from both parents to have haemophilia. However, if they inherit the mutated gene from only one parent, they can still be carriers of the disorder. Therefore, while it is not possible for him to pass down haemophilia to any male offspring, it is possible for his female offspring to be carriers.

Your Friend Has Haemophilia and Was Worried That He Could