How did scientist prove that dolly was not a result of a sneak mating

How does photosynthesis show the conservation of mass and energy?

What happens when two nitrogen atoms share electrons

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?