Both types of myotonic dystrophy are inherited in an autosomal dominant pattern, which means one copy of the altered gene in each cell is sufficient to cause the disorder. In most cases, an affected person has one parent with the condition.
Diagram Of Myotonic Dystrophy.
These are some of the features that people with myotonic dystophy might have.
This picture shows how the parents can effect there children by passiing the effected gene.