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12
MCQ (Single Correct Answer)

In RNAi, genes are silenced using

A

$s s$ DNA

B

ds DNA

C

ds RNA

D

$s s$ RNA

13
MCQ (Single Correct Answer)

The first clinical gene therapy was done for the treatment of

A

AIDS

B

Cancer

C

Cystic fibrosis

D

SCID (Severe Combined Immuno Deficiency) resulting from the deficiency of ADA

14
MCQ (Single Correct Answer)

ADA is an enzyme which is deficient in a genetic disorder SCID. What is the full form of ADA?

A

Adenosine Deoxy Aminase

B

Adenosine Deaminase

C

Aspartate Deaminase

D

Arginine Deaminase

15
MCQ (Single Correct Answer)

Silencing of a gene could be achieved through the use of

A

short interfering RNA (RNAi) only

B

antisense RNA only

C

Both RNAi and antisense RNA

D

None of these

16

In view of the current food crisis, it is said, that we need another green revolution. Highlight the major limitations of the earlier green revolution.

Explanation

Major limitations of the earlier green revolution are as follows

(i) Generally undesired characters also breed along with desired ones.

(ii) Regular use of fertilisers affected both soil fertility and quality.

(iii) Extensive use of pesticides/insecticides/weedicides resulted in harmful effects on the natural components of the ecosystem.

So, another green revolution that can curb these problems and enhance the quality food production in limited land resources is certainly required.