Changes

• An affected person can inherit the condition from an affected parent.  

• An affected person can inherit the condition from an affected parent.  

• the condition may result from a new mutation in the gene (e, without any family history) || Huntington disease, Marfan syndrome

• the condition may result from a new mutation in the gene (e, without any family history)  

 

|| Huntington disease, Marfan syndrome

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|Autosomal recessive || • Both copies of the gene in each cell should have mutations.

|Autosomal recessive || • Both copies of the gene in each cell should have mutations.

• Typically not seen in every generation of an affected family. || cystic fibrosis, sickle cell disease

• Typically not seen in every generation of an affected family.

|| cystic fibrosis, sickle cell disease

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|Codominant || • Two different versions (alleles) of a gene are expressed.

|Codominant || • Two different versions (alleles) of a gene are expressed.