MCQ
Match List $I$ with List $II$ : Choose the correct answer from the options given below :
List $I$ List $II$
$A.$ Down's syndrome $I.$ $11^{th}$ chromosome
$B.$ $\alpha -$Thalassemia $II.$ $X$ chromosome
$C.$ $\beta -$Thalassemia $III.$ $21^{st}$ chromosome
$D.$ Klinefelter's syndrome $IV.$ $16^{th}$ chromosome
  • A
    $ A-II, B-III, C-IV, D-I$
  • $ A-III, B-IV, C-I, D-II$
  • C
    $ A-IV, B-I, C-II, D-III$
  • D
    $A-I, B-II, C-III, D-IV$

Answer

Correct option: B.
$ A-III, B-IV, C-I, D-II$
b
Down's syndrome is due to presence of an additional copy of chromosome number $21$. Klinefelter's syndrome is caused due to presence of an additional copy of $X-$chromosome. $\alpha$-Thalassemia is controlled by two closely linked genes on chromosome $16$ of each parent. $\beta$-Thalassemia is controlled by a single gene HBB on chromosome $11$ of each parent.

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