Insertional inactivation of the lac Z gene forms-

(1) Blue recombinant colonies

(2) Colourless recombinant colonies

(3) Fluorescent green colonies

(4) There is no relation between the lac Z gene and colour of the colony.

Two bacteria found to be very useful in genetic engineering are

Which of the following would you choose as the safest and least cumbersome selectable marker-

The visualization of the DNA bands on the gel can be done with the help of

Plasmids are good vectors for genetic engineering because

Why is a marker gene useful?

1. It shows you whether the gene being added, has been taken up or not.

2. It's a way of labelling which gene you want to modify.

3. It sticks with the striker gene.

4.  It marks the position of r-DNA

The introduction of genes into plant cells often makes use of
a. Disarmed Agrobacterium vectors
b. disarmed retroviral vectors
c. Ti plasmid of Agrobacterium
c. Ri plasmid of Agrobacterium

The definition of biotechnology given by EFB encompasses

1.      Traditional view

2.      Modern molecular biotechnology

3.      Both 1 and 2

4.     Only Molecular analogs

If you transform a cell with an alien piece of DNA only, What is the possibility?

1.      This alien piece becomes a part of the host genome.

2.      It doesn't become a part of the host's genome but keeps on replicating

3.      The cloning of genes won't get affected in the absence of Origin of replication.

4.     Multiple identical copies of an alien piece of DNA can be formed irrespective of its integration into the host's genome.

Cohen and Boyer are known for which of the following discoveries?

1.      Antibiotic resistance gene

2.      Recombinant DNA

3.      Restriction Digestion

4.     Plasmid