Mendelian Disorders

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A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by:

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1. **Genotype of Mother**: Since the condition is X-linked, the mother has two X chromosomes ($X^AX$).
2. **Inheritance to Sons**: A son receives his only X chromosome from his mother ($Y$ comes from the father). Thus, he can inherit the $X^A$ chromosome.
3. **Inheritance to Daughters**: A daughter receives one X chromosome from each parent. She can receive the $X^A$ chromosome from her mother.
4. **Conclusion**: Both sons and daughters have a 50% chance of receiving the specific X chromosome from their mother.

Mendelian Disorders

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