MCQ
Cryptorchidism is a condition where.
- AOne or both testes fail to descend into the scrotum.
- BOne of both testes are not developed.
- COne of both testes are not developed.
- DNone of these.
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| | Column A | | Column B |
| (i) | Dodo | (a) | Africa |
| (ii) | Quagga | (b) | Russia |
| (iii) | Thylacine | (c) | Mauritius |
| (iv) | Stellar's sea cow | (d) | Australia |
Choose the correct option for $A$ and $B$ to complete the given $NCERT$ statement
$I.$ Eco. $RI$ restriction endonuclease enzyme is isolated from Escherichia coli $RY13$
$II.$ Its recognition sequence is $5^{\prime}-$ $GAATTC - 3 '$
$3^{\prime}-C T T A A G-5^{\prime}$
$5^{\prime}-G-A-A-T-T-C-3^{\prime}$
$3^{\prime}-C-T-T-A-A-G-5^{\prime}$
$III.$ Its site of cleavage is