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प्रश्न
Bt-cotton shows adverse effect on the population of which butterfly?
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उत्तर
Bt-cotton shows adverse effect on the Monarch butterfly populations.
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संबंधित प्रश्न
Why are bio-fertilizers preferred over chemical fertilizers?
What is the cell that receives a recombinant gene called?
What is the role of Taq-polymerase in PCR technology?
The following identifies the major features of technology that differentiate modem biotechnology from classical biotechnology.
i. Capability of science to change the genetic material for getting new specific products through rDNA technology, polymerase chain reaction (PCR), microarrays, cell culture and fusion, and bioprocessing.
ii. Ownership of technology and its sociopolitical impact.
iii. Modem biotechnology makes use of only fermentation technology.
iv. Classical biotechnology relies only on principles of plant and animal tissue culture.
Following are the four statements regarding separation of DNA fragments using Gel electrophoresis. Identify the INCORRECT statements.
i. DNA is negatively charged molecule and so it is loaded on gel towards the Anode terminal.
ii. DNA fragments travel along the surface of the gel whose concentration does not affect movement of DNA.
iii. Smaller the size of DNA fragment, larger is the distance it travels through it.
iv. Pure DNA can be visualized directly by exposing to UV radiation.
Name the plant disease caused by Agrobacterium tumefaciens.
Cloning of genes, play a very significant role in genetic engineering, helping the transfer of desirable foreign genes into different hosts. The scientists, to make this process easier and effective are creating engineered vectors in such a way that they help easy linking of foreign DNA and selection of recombinants from non-recombinants. 'pBR322' is one such engineered vectors developed by scientists. A diagram of an engineered vector pBR322 is given below:
- Name the host for this cloning vector.
- Identify 'Rop' and 'Ori' in the diagram from 'U', 'V', 'W', 'X', 'Y' and 'Z'. Write their functions.
- Draw the fragments that will be formed by the action of 'Z' (marked in the diagram) on the specific site of the DNA segment given below:
5' --- GTACGAATCCTGA --- 3'
3' --- CATGCTTAGGACT --- 3'
Study the following lists and choose the correct match.
| List I | List II |
| A. Vector | (i) Resistant to cotton bollworms |
| B. Downstream processing | (ii) Mobile genetic elements |
| C. Cry II AB | (iii) Controls corn borers |
| D. Transposons | (iv) Ti plasmid |
| (v) Purifying protein in biopharmaceuticals |
How gene amplification is done?
What is EcoRI?
