Function of Nucleases:
 

1.	Break the polynucleotide chain by breaking each terminal nucleotide
2.	Breaks phosphodiester bond
3.	Breaks peptide bonds
4.	Breaks ester bonds

Hybridoma is:
 

The bacteria generally used for genetic engineering is:

1. Agrobacterium

2. Bacillus

3. Pseudomonas

4. Clostridium

A giant rat is formed in the laboratory, what is the reason:

1. Gene mutation

2. Gene synthesis

3. Gene manipulation

4. Gene replication

Plasmid has been used as a vector because:
 

In bacteria, the plasmid is:

1. Extrachromosomal material

2. Main DNA

3. Non-functional DNA

4. Repetitive gene

Which of the following enzymes are used to join bits of DNA:

1. Ligase

2. Primase

3. DNA polymerase

4. Endonuclease

Manipulation of DNA in genetic engineering became possible due to the discovery of:

1. Restriction endonuclease

2. DNA ligase

3. Transcriptase

4. Primase

Which one of the following bacteria has found extensive use in genetic engineering work in plants?

What is true for a plasmid?
1. Plasmids are widely used in gene transfer
2. These are found in a virus
3. A plasmid contains genes for vital activities
4. This is the main part of the chromosome