Which of the following would you choose as the safest and least cumbersome selectable marker-

(1) Ampicillin resistance gene

(2) Tetracyclin resistance gene

(3) Kanamycin resistance gene

(4) b Galactosidase gene

Subtopic:  Selectable Markers: III | Selectable Markers |
 68%
From NCERT
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Recombinant DNA is formed in nature during-

(1) Crossing over at pachytene

(2) Integration of plasmid to form episome

(3) Integration of phage DNA to form prophage

(4) More than one is correct.

Subtopic:  Tools: Vectors: I | Tools |
 69%
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Southern Blotting essentially makes use of a

(1) Buffer

(2) Electrodes

(3) Agarose gel

(4) All of the above

Subtopic:  Process of Biotech |
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The native charge on DNA molecules is

(1) Positive

(2) Negative

(3) Neutral

(4) DNA is an ampholyte

Subtopic:  Process of Biotech |
 95%
From NCERT
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The visualization of the DNA bands on the gel can be done with the help of

(1) UV rays

(2) Ethidium bromide

(3) Chromogenic substrate

(4) More than one is correct

Subtopic:  Process of Biotech |
 56%
From NCERT
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If one needs to derive a cDNA of human insulin, which cells should be taken up for extraction?

(1) Any cell of the human body as the DNA is same in all cells

(2) Any nucleated cell of the human body

(3) b cells of islets of Langerhans of human pancreas

(4) WBCs

Subtopic:  Host & Desired DNA: II | Host & Desired DNA |
 66%
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The natural genetic engineer of plants is

(1) Armillaria ostoyae

(2) Agrobacterium tumefacians

(3) Argemonaria geneticis

(4) Nuclearia incorporate

Subtopic:  Tools: Vectors: II | Tools |
 98%
From NCERT
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A distinct advantage of continuous culture over batch culture is

(1) Higher productivity

(2) Versitality

(3) Can be used for different reactions everyday

(4) Continuous inflow of nutrients

Subtopic:  Large Scale Production: II | Large Scale Production |
 57%
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Plasmids are good vectors for genetic engineering because

1. They self replicate within bacterial cells

2. Replicate freely outside bacterial cells

3. Can be replicated in culture

4. Can be replicated in laboratory using enzymes

Subtopic:  Tools: Vectors: I | Tools |
 79%
From NCERT
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Molecular weight of DNA in diploid human cell in Da is

  1. 3.6 X 10 12 Da
  2. 46 X 10 10
  3. 30 billion Da
  4. 46 billion Da
 64%
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