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Question : Chromosomal disorders are caused due to

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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


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