Give differences : Mendelian disorders and Chromosomal disorders
 

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Mendelian disorders Chromosomal disorders
 $(1)$ These are due to alteration in a single gene.  $(1)$ These are caused due to absence or excess of one or more chromosomes of abnormal arrangement of one/more chromosomes.
 $(2)$ They are transmitted into generations through Mendelian principles of inheritance.  $(2)$ They are transmitted as the affected individual is sterile.
 $(3)$They may be recessive or dominant in nature.  $(3)$ This is always dominant in nature.
 $(4)$ Examples : Colour blindness, Phenylketonuria.  $(4)$ Examples : Down's syndrome, Turner's syndrome.

 

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