RNA interference involves:

1.	Synthesis of cDNA from RNA using reverse transcriptase
2.	Silencing of specific mRNA due to complementary RNA
3.	Interference of RNA in the synthesis of DNA
4.	Synthesis of mRNA from DNA

Bacillus thuringiensis forms protein crystals which contain insecticidal protein. This protein:

Silencing of mRNA has been used in producing transgenic plants resistant to:
1. Bacterial blights 

2. Bollworms

3. Nematodes 

4. White rusts

Read the following four statements (A-D) and find out certain mistakes in two of them:

Which of the two statements has mistakes?
1. Statements (A) and (B)
2. Statements (B) and (C)
3. Statements (C) and (D)
4. Statements (A) and (C)

Which one of the following is now being commercially produced by biotechnological procedures:

1. Morphine

2. Quinine

3. Insulin

4. Nicotine

The first clinical gene therapy was given for treating:
1.  Chickenpox
2.  Rheumatoid arthritis
3.  Adenosine deaminase deficiency
4.  Diabetes mellitus

Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produced (in the host cells):
1. A particular hormone
2. An antifeedant
3. A toxic protein
4. Both sense and anti-sense RNA

Microbes found to be very useful in genetic engineering are:

1. Escherichia coli and Agrobacterium tumefaciens

2. Vibrio cholerae and a tailed bacteriophage

3. Diplococcus sp. and Pseudomonas sp.

4. Crown gall bacterium and caenorhabditis elegans

Golden rice is a promising transgenic crop. When released for cultivation, it will help in:

1. alleviation of vitamin-A deficiency

2. pest resistance

3. herbicide tolerance

4. producing a petrol-like fuel from rice