Given a scientific question, generate a correct answer to it.

Ex Input:
Each daughter cell represents one outcome of all possible combinations of maternal and paternal what?

Ex Output:
chromosomes

Ex Input:
Shielding should be used when receiving x-rays to limit exposure to what potentially harmful form of energy?

Ex Output:
radiation

Ex Input:
What is the point on the ground that is located directly above where underground rocks fracture (or the "focus" point)?

Ex Output:
epicenter