Question

Hemophilia is a sex-linked disease involving the blood clotting mechanisms. It is carried on the X chromosome. A female carrier of hemophilia (XhX) and a male with hemophilia (XhY) produce offspring. Which of the following best represents the possibility of having a son who inherits hemophilia?

-100%
-75%
-50%
-25%

Answer 1

The brain and the spinal cord make up the central nervous system.

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