Question

Match column-I with column-II and choose the correct option:

$\begin{array}{cccc}& \text{Column-I}& & \text{Column-II}\\ \text{(a)}& \text{VNTR}& \text{(i)}& \beta -\text{galactosidase}\\ \text{(b)}& \text{Lac operon}& \text{(ii)}& \text{DNA ligase}\\ \text{(c)}& \text{Genetic code}& \text{(iii)}& \text{DNA fingerprinting}\\ \text{(d)}& \text{Okazaki fragments}& \text{(iv)}& \text{Unambiguous}\end{array}$

• A. a $\to$ iv, b $\to$ ii, c $\to$ iii, d $\to$ i
• B. a $\to$ iii, b $\to$ i, c $\to$ iv, d $\to$ ii
• C. a $\to$ i, b $\to$ ii, c $\to$ iii, d $\to$ iv
• D. a $\to$ iii, b $\to$ iv, c $\to$ i, d $\to$ ii

Answer 1

The correct option is B a $\to$ iii, b $\to$ i, c $\to$ iv, d $\to$ ii

VNTRs are used in DNA fingerprinting.

$\beta$- galactosidase is the enzyme required for the metabolism of lactose. The structural gene, z of lac operon codes for this enzyme.

The genetic code is unambiguous which means each codon specifies one amino acid only.

Okazaki fragments are joined by DNA ligase.

Hence, the correct match is:
$$\begin{array}{cccc}& \text{Column-I}& & \text{Column-II}\\ \text{(a)}& \text{VNTR}& \text{(iii)}& \text{DNA fingerprinting}\\ \text{(b)}& \text{Lac operon}& \text{(i)}& \beta -\text{galactosidase}\\ \text{(c)}& \text{Genetic code}& \text{(iv)}& \text{Unambiguous}\\ \text{(d)}& \text{Okazaki fragments}& \text{(ii)}& \text{DNA ligase}\end{array}$$