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DNA Fingerprinting - Class XII

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Multiple Choice

Fill up the blanks and select the correct option.
(i) EcoRI cuts the DNA between bases ___ only ____ when the sequence _____  is present in the DNA.
(ii) Disruption of the cell membranes can be achieved by treating the bacterial cells, plant cells and fungal cells with enzymes respectively ____, ____ and ___.
(iii) Since DNA has a ____ charge, it moves towards the ____ of the electrophoretic chamber.

  1. (i) G A, GAATTC (ii) endonuclease, cellulase, chitinase (iii) negative, anode
  2. (i) G A, GAATTC (ii) lysozyme, cellulase, chitinase (iii) positive, cathode
  3. (i) G A, GAATTC (ii) lysozyme, cellulase, chitinase negative/anode
  4. (i) G A, GAAATC (ii) lysozyme, cellulase, chitinase (iii) positive, cathode
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