Which of these syndromes is associated with microcephaly?

Ans. D. All of theseMicrocephaly or small head is subdivided into primary and secondary microcephaly. Primary microcephaly usually follows a Mendelian pattern of inheritance or is associated with certain syndromes. Down syndrome (trisomy 21), Edward syndrome (trisomy 18), Cri-du-chat syndrome (5p-), and Cornelia de Lange syndrome are associated with microcephaly.