Genetic Carrier Status: Could Greg or his Mother be Carriers of Myotonic Dystrophy Gene?

Question:

Could Greg or his mother be carriers of the gene that causes myotonic dystrophy?

Answer:

Both Greg and his mother could potentially be carriers of the gene that causes myotonic dystrophy, an autosomal dominant disorder. However, carrier status can only be confirmed through genetic testing and a detailed review of the family's medical history.

Explanation:

Yes, both Greg and his mother could possibly be carriers of the gene that causes myotonic dystrophy. Carrier status depends on the inheritance pattern of the specific disease. In the case of myotonic dystrophy, an autosomal dominant disorder, an individual only needs one copy of the gene to potentially express the disease. If his mother is a carrier, Greg has a 50 percent chance of inheriting the disease allele.

However, carrier status can only be confirmed through genetic testing. Knowing the family history can also provide valuable information.

From the information provided, it's not possible to definitively determine if either Greg or his mother carry the gene. It's also worth noting that being a carrier does not automatically mean that they will develop myotonic dystrophy.