$A$ person who is trisomic for the $21^{st}$ pair of chromosomes has:

  • A
    Klinefelter's syndrome
  • B
    Down's syndrome
  • C
    Turner's syndrome
  • D
    None of these

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Similar Questions

The reduction of one pair of chromosomes in humans is due to:

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Match the Column $I$ with Column $II$:
Column $I$Column $II$
$(A)$ Autosomal trisomy$(i)$ Turner's Syndrome
$(B)$ Allosomal trisomy$(ii)$ Mendelian disorder
$(C)$ Allosomal Monosomy$(iii)$ Klinefelter's Syndrome
$(D)$ Cystic fibrosis$(iv)$ Down's Syndrome

$A$ male individual with $47$ chromosomes due to the addition of an $X$ chromosome suffers from a condition called:

Select the incorrect statement regarding Down's syndrome.

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

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