Imagine these two scenarios...you're at work and you've just polished off a latte. You throw the cup in the lunchroom garbage but unbeknownst to you, a co-worker takes the cup. It contains particles of your DNA where you lips have touched the lid. That discarded tissue is then cloned. In the second scenario, you go to the doctor to receive treatment for a tumor. The doctor needs a biopsy, which you assume will be used to diagnose your condition. However, this tissue sample is