<prompt> Examples of X linked dominant inheritance are all except:Colour blindnessHypophosphatemic type of vitamin D resistant ricketsOrofaciodigital syndromeIncontinentia pigmenti  <response>: Ans. A. Colour blindness is X linked recessive inheritance.Dominant X linked conditions are rare, both the heterozygous female and Hemizygous males are affected. All the sons of affected males are normal and all the daughters are affected. The affected females transmit the disease to half of the sons and half of the daughters. 