Q. No.In Bt cotton, the Bt toxin present in plant tissue as pro-toxin is converted into active toxin due to:
1. alkaline pH of the insect gut
2. acidic pH of the insect gut
3. action of gut microorganisms
4. presence of conversion factors in the insect gut
2. acidic pH of the insect gut
3. action of gut microorganisms
4. presence of conversion factors in the insect gut
The first human hormone produced by recombinant DNA technology is:
1. Insulin
2. Estrogen
3. Thyroxin
4. Progesterone
Which of the following Bt crops is being grown in India by the farmers?
| 1. | Cotton | 2. | Brinjal |
| 3. | Soybean | 4. | Maize |
Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin-A deficiency?
| 1. | Flaver savr tomato | 2. | Canolla |
| 3. | Golden rice | 4. | Bt-brinjal |
A single strand of nucleic acid tagged with a radioactive molecule is called:
| 1. | Vector | 2. | Selectable marker |
| 3. | Plasmid | 4. | Probe |
The genetically-modified (GM) brinjal in India has been developed for:
1. insect-resistance
2. enhancing self-life
3. enhancing mineral content
4. drought-resistance
1. fungi
2. viruses
3. insects
4. nematodes
Genetic engineering has been successfully used for producing:
| 1. | transgenic mice for testing the safety of polio vaccine before use in humans |
| 2. | transgenic models for studying new treatments for certain cardiac disease |
| 3. | transgenic Cow-Rosie which produces high-fat milk for making ghee |
| 4. | Animals like bulls for farm work as they have super power |
Some of the characteristics of Bt cotton are:
| 1. | long fibre and resistance to aphids |
| 2. | medium yield, log fibre, and resistance to beetle pests |
| 3. | high yield and production of toxic protein crystals which kill dipteran pests |
| 4. | high yield and resistance to bollworms |
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