Question

Match the following

List - I	List - II
A. Ori	IV. Controlling the copy number of linked DNA
B. Selectable marker	III. Permitting the growth of transformants
C. Cloning site	II. Single recognition site to link alien DNA
D. Cloning vector	I. Low molecular weight

• A. A-IV, B-III, C-II, D-I
• B. A-I, B-II, C-III, D-IV
• C. A-IV, B-II, C-III, D-I
• D. A-IV, B-III, C-II, D-III

Hint:

In matching questions, look for unique functions or characteristics that clearly identify each item. Keywords like "Ori", "marker", and "vector" give strong clues.

Answer 1

The Correct Option is A

A. Ori — IV. Controlling the copy number of linked DNA
Ori (origin of replication) determines how many copies of the plasmid are produced in a cell. B. Selectable marker — III. Permitting the growth of transformants
Selectable markers help in identifying cells that have taken up the vector by allowing only those cells to grow. C. Cloning site — II. Single recognition site to link alien DNA
The cloning site contains restriction enzyme recognition sites to insert foreign DNA. D. Cloning vector — I. Low molecular weight
Cloning vectors are typically small plasmids that replicate efficiently and are easy to manipulate.