Turner's syndrome in humans is caused by

Due to non-disjunction of chromosomes during spermatogenesis,sperms carry both sex chromosomes $(22A + XY)$ and some sperms do not carry any sex chromosome $(22A + O)$. If these sperms fertilize normal eggs $(22A + X)$,what types of genetic disorders appear among the offspring?

Match Column $-I$ with Column $-II$ and select the correct option.

Column $-I$	Column $-II$
$(P)$ Turner syndrome	$(i)$ Sex chromosome $(2n-1)$
$(Q)$ Down syndrome	$(ii)$ Sex chromosome $(2n+1)$
$(R)$ Klinefelter syndrome	$(iii)$ Autosomal $(2n+1)$

$A$ person who has $47$ chromosomes due to an extra $X$ chromosome is affected by

If the haploid chromosome number in a cell is $12$,then the monosomic number will be:

Mongolism syndrome is caused by