Q. No.Silencing of a gene could be achieved through the use of:
1.
RNAi only
2.
antisense RNA only
3.
both RNAi and antisense RNA
4.
none of the above
The term ‘totipotency’ refers to the capacity of a:
1. cell to generate the whole plant
2. bud to generate the whole plant
3. seed to germinate
4. cell to enlarge in size
The plantlets produced during plant tissue culture are called somaclones because:
| 1. | They can be produced in a very short span of time |
| 2. | They are the result of the somatic hybridization of two cells |
| 3. | The gametes develop parthenogenetically to produce genetically identical plantlets |
| 4. | They are genetically identical to the original plant from which they were grown |
RNAi, as a mechanism of cellular defense, takes place in:
| 1. | All bacteria | 2. | All unicellular organisms |
| 3. | All plants only | 4. | All eukaryotic organisms |
The first clinical gene therapy trial was given in 1990 to a 4 year girl with:
| 1. | Alpha – 1 antitrypsin deficiency |
| 2. | Cystic fibrosis |
| 3. | Adenosine deaminase deficiency |
| 4. | Chronic myeloid leukemia |
The transgenic cow, Rosie, produced milk that:
| 1. | contained human beta-lactalbumin |
| 2. | contained interferons to treat viral infections |
| 3. | contained Alpha-1 – 1 antitrypsin |
| 4. | is protein enriched |
Match each item in Column I with one in Column II and select the answer from the codes given below:
|
Column I |
Column II |
||
|
A. |
Bioprospecting |
a. |
the process of discovery and commercialization of new products based on biological resources |
|
B. |
Biopiracy |
b. |
the exploitative patenting of already widely used natural resources, such as plant varieties, by commercial entities |
|
C. |
Bioremediation |
c. |
a process that uses microorganisms or their enzymes to treat polluted sites for regaining their original condition |
|
D. |
Biofortification |
d. |
the process by which the nutritional quality of food crops is improved through agronomic practices, conventional plant breeding, or modern biotechnology |
Codes
| Options: | A | B | C | D |
| 1. | a | b | c | d |
| 2. | a | b | d | c |
| 3. | b | a | c | d |
| 4. | b | a | d | c |
Antisense technology:
| 1. | selectively blocks the expression of a gene. |
| 2. | combines genetic material from different species. |
| 3. | combines organelles and cells. |
| 4. | alters or transfers cells. |
ADA is an enzyme which is deficient in a genetic disorder SCID. What is the full form of ADA?
| 1. | Adenosine deoxyaminase | 2. | Adenosine deaminase |
| 3. | Aspartate deaminase | 4. | Arginine deaminase |
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