X-linked diseases of autosomal recessive inheritance develop in males with anomalies in the X chromosome, and in women with anomalies in both X chromosomes. Nonetheless, in women, when a single X chromosome is altered, daughters will be just carriers of the disease.
In the example one shall see in this picture, one can see the likelihood of passing the genetic disorder to offspring in a couple where the male is sick, and the female is a carrier. These are the possible percents:
- 25% of having a sick son
- 25% of having a healthy son
- 25% of having a carrier daughter
- 25% of having a sick daughter