<prompt> The following is not a feature of pierre - Robin syndrome -Hearing defectColoboma IrisRespiratory distressMandibular hypoplasia  <response>: Ans. is b i.e., Cloboma iris Pierre Robin syndrome consists of - Micrognatnia Fore shoened floor of mouth CHDs Cleft palate or high arched palate Mandibular hypoplasia Micrognathia Respiratory obstruction Normal size tongue 