Which one of the following genetic disorders | vedclass

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(B) $1$. Down's syndrome is caused by trisomy of chromosome $21$,resulting in a karyotype of $45 A + XX$ or $45 A + XY$.$2$. Klinefelter's syndrome oc

Vedclass · Accepted Answer

Klinefelter's syndrome - $44 A + XXY$

Vedclass · Answer

(B) $1$. Down's syndrome is caused by trisomy of chromosome $21$,resulting in a karyotype of $45 A + XX$ or $45 A + XY$.$2$. Klinefelter's syndrome occurs in males with an extra $X$ chromosome,resulting in a karyotype of $44 A + XXY$.$3$. Turner's syndrome occurs in females due to the absence of one $X$ chromosome,resulting in a karyotype of $44 A + XO$.$4$. Colour blindness is a sex-linked recessive disorder caused by a mutation on the $X$ chromosome,not a chromosomal abnormality involving an extra or missing autosome set ($45 A + XY$ is incorrect).Therefore,the correct match is Klinefelter's syndrome - $44 A + XXY$.

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 $(2n+1)$

Which one of the following genetic disorders is $CORRECTLY$ matched with its karyotype?

Similar Questions

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 $(2n+1)$

Gynaecomastia is the symptom of

An extra sex chromosome is present in . . . . . . .

Loss of a $X$ chromosome in a particular cell during its development results in:

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?

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