Which of the following is an X-linked dominant disorder?: (A) Vitamin D resistant rickets, (B) Familial hypercholesterolemia, (C) Red green color blindness, (D) Achondroplasia
Answer is A. Ref: Robbins Pathology 9th ed. pg. 142Vitamin D resistant ricketsPHEX gene. X linked dominantFamilial hypercholesterolemiaAutosomal recessiveRed green colour blindnessX linked recessiveAchondroplasiaAutosomal dominant