Autosomal Dominant Inheritance

 - Most common mode of Mendelian inheritance 

 - Affected individual carries the abnormal gene on one of a pair of autosomes 

 - 1 in 2 chance of inheriting the abnormal gene from affected parent, but there may be variation in expression, non-penetrance, no family history (new mutation, parental mosaicism, non-paternity) or homozygosity (rare). 



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