Gene Silencing

Q.

Enzyme polygalacturonase is responsible for

1. Vegetable softening

2. Fruit softening

3. Tomato hardening

4. Sugarcane rotting

Q.

RNA interference is:

1. Mutation in mRNA.

2. Inserting RNA molecule in between DNA.

3. Inhibiting activity of a gene through production of sense and antisense.

4. Formation DNA from RNA.

Q.

Silencing of mRNA has been used in producing transgenic plants resistant to:

1. Bollworms

2. Nematodes

3. White rusts

4. Bacterial blights

Q. RNAi helps in producing pest resistant plants through the formation of

1. dsDNA
2. ssDNA
3. ssRNA
4. dsRNA

Q. In pest resistant plants that use gene silencing method, host plant generated dsRNA triggers protection against

1. Rhizobium infestation
2. Nematode infestation
3. Bacterial infestation
4. Nostoc infestation

Q.

RNA interference which is employed in making tobacco plant resistant to Meloidegyne incognita is essentially involved in preventing the process of

1. translation of mRNA

2. transcription

3. replication of DNA

4. splicing of hnRNA

Q.

Given below are a few statements. Choose the correct answer in reference to these statements

Statement 1: RNAi technique is used for gene knockout

Statement 2: Gene silencing or gene knockdown can be achieved by RNAi technique

Statement 3: siRNA suppresses gene expression converting mRNA into cDNA

Statement 4: siRNA suppresses gene expression by degrading mRNA

1. Statement 1 is incorrect while statement 3 is correct
2. Statement 2 and 4 are correct
3. Statement 3 and 4 are incorrect
4. Statement 1 and 3 are correct

Q.

Silencing of mRNA has been used in producing transgenic plants resistant to:

1. Bollworms

2. Nematodes

3. White rusts

4. Bacterial blights

Q. In pest resistant plants that use gene silencing method, host plant generated dsRNA triggers protection against

1. Rhizobium infestation
2. Nematode infestation
3. Bacterial infestation
4. Nostoc infestation

Q.

Enzyme polygalacturonase is responsible for

1. Vegetable softening

2. Fruit softening

3. Sugarcane rotting

4. Tomato hardening