Match List I with List II : $\begin{array}{|l|l|l|l|}\hline & \text{List I} & & \text{List II} \\\hline…
Match List I with List II :
$\begin{array}{|l|l|l|l|}\hline & \text{List I} & & \text{List II} \\\hline \text{A.} & \text{Down's syndrome} & \text{I.} & 11^{\text{th}} \text{ chromosome} \\\hline \text{B.} & \alpha\text{-Thalassemia} & \text{II.} & 'X' \text{ chromosome} \\\hline \text{C.} & \beta\text{-Thalassemia} & \text{III.} & 21^{\text{st}} \text{ chromosome} \\\hline \text{D.} & \text{Klinefelter's syndrome} & \text{IV.} & 16^{\text{th}} \text{ chromosome} \\\hline\end{array}$
Choose the correct answer from the options given below :
A-II, B-III, C-IV, D-I
A-III, B-IV, C-I, D-II
A-IV, B-I, C-II, D-III
A-I, B-II, C-III, D-IV
Solution
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.