Question

The DNA molecule to which the gene of interest is integrated for cloning is called

• A. Transformer
• B. Template
• C. Vector
• D. Carrier

Answer 1

The correct option is C

Vector

The correct option is C.

Explanation of the correct option:

Vector:

1. A vector is a vehicle or any particle which is used to artificially carry a foreign DNA sequence from one cell to another cell.
2. Any vector which carries foreign DNA material is called recombinant DNA.
3. It is very often either a plasmid or a virus.
4. These types of vectors are very commonly used in recombinant DNA techniques to carry out cloning.

• Characteristics of vector DNA:

1. It should be a selectable sequence.
2. It should be a lightweight DNA particle.
3. It should be easy to isolate and purify.

Explanation of the incorrect options:

Option A:

The transformer is not related to DNA technology but these are organisms that help transform one form of food into the other form of food.

Option B:

A template refers to a specific DNA sequence or a strand of DNA that is used by DNA polymerase or RNA polymerase for the attachment of complementary base pairs during DNA replication or RNA transcription.

Option D:

1. Carrier refers to a person who simply carries a disease from one generation to the other generation.
2. Carriers never express the gene and hence the disease too is never expressed in them.

Final answer: The DNA molecule to which the gene of interest is integrated for cloning is called a vector.