What limitation of traditional hybridization procedures used in plant and animal breeding can be overcome by recombinant DNA procedures?

I: Inclusion and multiplication of undesirable genes
II: Inability of inclusion of desirable traits from other species
 
1. Only I 2. Only II
3. Both I and II 4. Neither I nor II
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Which of the given statements is correct in the context of visualizing DNA molecules separated by agarose gel electrophoresis?

1. DNA can be seen in visible light
2. DNA can be seen without staining in visible light
3. Ethidium bromide stained DNA can be seen in visible light
4. Ethidium bromide stained DNA can be seen under exposure to UV light
Subtopic:  Polymerase Chain Reaction: PCR | Selectable Markers | Tools |
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