The genotype of an individual with Down's syn | vedclass

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Question

(A) Down's syndrome is a chromosomal disorder caused by the presence of an additional copy of chromosome number $21$ (trisomy of $21$).This condition

Vedclass · Accepted Answer

$45 + XX$

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(A) Down's syndrome is a chromosomal disorder caused by the presence of an additional copy of chromosome number $21$ (trisomy of $21$).This condition results in a total of $47$ chromosomes instead of the normal $46$.For a female with Down's syndrome,the genotype is $45 + XX$,and for a male,it is $45 + XY$.Among the given options,$45 + XX$ represents the genotype of a female with Down's syndrome.

Column-$I$ (Disorder)	Column-$II$ (Ploidy)
$P$. Down's syndrome	$I$. Sex chromosomal trisomy
$Q$. Klinefelter's syndrome	$II$. Sex chromosomal monosomy
$R$. Turner's syndrome	$III$. Autosomal trisomy

The genotype of an individual with Down's syndrome is:

Similar Questions

Match the following columns:

Column-$I$ (Disorder) Column-$II$ (Ploidy)

$P$. Down's syndrome $I$. Sex chromosomal trisomy

$Q$. Klinefelter's syndrome $II$. Sex chromosomal monosomy

$R$. Turner's syndrome $III$. Autosomal trisomy

Euploidy is best explained by

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

Give examples of disorders caused by sex chromosomal abnormalities and describe them briefly.

Turner's syndrome in humans is caused by

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