Title: What are the different ways a genetic condition can be inherited?: MedlinePlus Genetics
Headings: What are the different ways a genetic condition can be inherited?
What are the different ways a genetic condition can be inherited?
Topics in the Inheriting Genetic Conditions chapter

Content: What are the different ways a genetic condition can be inherited?: MedlinePlus Genetics
What are the different ways a genetic condition can be inherited? From Genetics Home Reference. Learn more
Some genetic conditions are caused by variants (also known as mutations) in a single gene. These conditions are usually inherited in one of several patterns, depending on the gene involved: Patterns of inheritance
Inheritance pattern
Description
Examples
Autosomal dominant
One altered copy of the gene in each cell is sufficient for a person to be affected by an autosomal dominant disorder. In some cases, an affected person inherits the condition from an affected parent. In others, the condition may result from a new variant in the gene and occur in people with no history of the disorder in their family. Huntington disease, Marfan syndrome
Autosomal recessive
In autosomal recessive inheritance, variants occur in both copies of the gene in each cell. The parents of an individual with an autosomal recessive condition each carry one copy of the altered gene, but they typically do not show signs and symptoms of the condition.