Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

[EX Q]: Humans possess greater diversity of genetics type, compared to laboratory animals.
[EX A]: Humans possess greater diversity of what type, compared to laboratory animals?

[EX Q]: Sodium-potassium pumps help nerve cells establish a voltage across their plasma membranes.
[EX A]: Sodium-potassium pumps help nerve cells establish a voltage across their what?

[EX Q]: Genetic equilibrium occurs evolution what process doesn't exist within the population.
[EX A]:
Genetic equilibrium occurs when what process doesn't exist within the population?