Question : Chromosomal disorders are caused due to
Answer»
Absence of one of more chromosomes Excess of one or more chromosomes ABNORMAL arrangement of one or more chromosomes All of the above
Solution :The CHROMOSOMAL disorders on the other hand are caused DUE to absence or excess or abnormal arrangement of one or more chromosomes. It is of 2 types - (i) aneuploidy and (II) polyploidy/euploidy