( ( The disorder ) ( ( ( ( exhibits ( autosomal ( dominant inheritance ) ) ) , ) ( requiring ( ( only ( one ( mutant allele ) ) ) ( -LRB- ( gene -RRB- ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN disorder)) (VP (VBZ exhibits) (NP (JJ autosomal) (JJ dominant) (NN inheritance)) (, ,) (S (VP (VBG requiring) (NP (NP (RB only) (CD one) (JJ mutant) (NN allele)) (PRN (-LRB- -LRB-) (NP (NN gene)) (-RRB- -RRB-)))))) (. .)))
The disorder exhibits autosomal dominant inheritance, requiring only one mutant allele (gene).
(ROOT (S (NP (NP (DT A) (NN person)) (VP (VBN affected) (PP (IN by) (NP (DT an) (JJ autosomal) (JJ dominant) (NN disorder))))) (VP (VBZ has) (NP (NP (CD one)) (VP (VBN mutated) (S (ADJP (JJ allele)))))) (. .)))
A person affected by an autosomal dominant disorder has one mutated allele.