The native charge on DNA molecules is

  1. Positive
  2. Negative
  3. Neutral
  4. DNA is an ampholyte
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The visualization of the DNA bands on the gel can be done with the help of

  1. UV rays
  2. Ethylene bromide
  3. Chromogenic substrate
  4. More than one is correct
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In electrophoresis, the DNA fragments to be separated are loaded into wells on the

  1. Anode end
  2. Cathode end
  3. Either cathode or anode depending on the treatment of DNA
  4. Neutral end

Concept Questions :-

Process of Biotech
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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

Concept Questions :-

Host & Desired DNA: II
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A transgenic is an organism which

  1. Incorporates the foreign gene
  2. Incorporates and expresses the foreign gen
  3. Incorporates, expresses and passes the foreign gene to the next generation.
  4. Incorporates, expresses, inherits and mutates a foreign gene.

Concept Questions :-

Intro & History: II
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The natural genetic engineer of plants is

  1. Armillaria ostoyae
  2. Agrobacterium tumefacians
  3. Argemonaria geneticis
  4. Nuclearia incorporate
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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

Concept Questions :-

Large Scale Production: II
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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
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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
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In AGE, A stands for

  1. Accelerated
  2. Attenuated
  3. Agarose
  4. Agar agar
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