Question

Match the entries in column-I with those of column-II and choose the correct answer
$\begin{array}{cc}\text{Column-I}& \text{Column-II}\\ \text{1. Restriction endonuclease}& \text{A. Alec Jeffreys}\\ \text{2. DNA fingerprinting}& \text{B. Arber}\\ \text{3. Linkage}& \text{C. Henking}\\ \text{4. X-chromosome}& \text{D. T. H. Morgan}\end{array}$

• A. 1-B, 2-D, 3-A, 4-C
• B. 1-A, 2-B, 3-D, 4-C
• C. 1-B, 2-A, 3-D, 4-C
• D. 1-C, 2-A, 3-D, 4-B

Answer 1

The correct option is C 1-B, 2-A, 3-D, 4-C

Restriction enzymes are a type of endonucleases. They are also called ‘molecular scissors’ or ‘biological scissors’ because they cut the DNA into fragments. It was discovered by Werner Arber in the 1960s.

DNA fingerprinting is a technique of making a unique DNA fingerprint of individuals by using the minisatellites present in the genomes. It was first invented by Alec Jeffreys.

Linkage is the physical association of genes on the chromosome. They usually tend to get inherited together as a unit. It was discovered by T. H. Morgan.

The X-chromosome was discovered by Henking.

The correct match is:
$\begin{array}{cc}\text{Column-I}& \text{Column-II}\\ \text{1. Restriction endonuclease}& \text{B. Arber}\\ \text{2. DNA fingerprinting}& \text{A. Alec Jeffreys}\\ \text{3. Linkage}& \text{D. T. H. Morgan}\\ \text{4. X-chromosome}& \text{C. Henking}\end{array}$