Autosomal dominant

Inheritance - autosomal dominant; Genetics - autosomal dominant

Autosomal dominant is one of many ways that a genetic trait or disorder can be passed down through families.

In an autosomal dominant disease, if you get the variant gene from only one parent, you can get the disease. Often, one of the parents may also have the disease. However, many autosomal dominant disorders' gene variant arises de novo, or for the first time in a family, in the affected person.

Autosomal dominant genes

In the case of autosomal dominant genes, a single abnormal gene on one of the autosomal chromosomes (one of the first 22 non-sex chromosomes) from either parent can cause the disease. One of the parents will have the disease (since it is dominant) in this mode of inheritance and that person is called the CARRIER. Only one parent must be a carrier in order for the child to inherit the disease.

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