Dr. Lee\'s family pets are in the middle of a mystery that needs to be solved. O

Question

Dr. Lee's family pets are in the middle of a mystery that needs to be solved. Olivia's food dish has been unusually empty lately...much more than what Olivia normally eats. The Lee's would like to determine if one of their other pets is devouring Olivia's food when nobody is looking, and if so, which pet is the guilty party.

Which test would you use to determine who is guilty?

electrophoresis and PCR that targets DNA left on the dish and focusing on DNA sequences that are the same in ALL cats and dogs.

Explanation / Answer

who is the other pet, a dog or a cat? if it is a dog then-

electrophoresis and PCR that targets DNA left on the dish and focusing on DNA sequences that are different among different kinds of dogs and not found in cats.

and if it is a cat then-

Lateral Flow Strip tests that detect proteins found in cat food, but not dog food.

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