DNA fingerprinting is a technique used for the detection of:

1. Alzheimer's disease.
2. Disputed parentage.
3. AIDS
4. Criminal based on evidence like hair.

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With reference to the use of nano-technology in health sector, which of the following statements is/are correct?

1. Targeted drug delivery is made possible by nanotechnology.
2. Nanotechnology can largely contribute to gene therapy.

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