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

[Q]: The majority of human genes have two or more possible alleles.
[A]: How many possible alleles do the majority of human genes have?


[Q]: One of the properties of an air mass is that an air mass has similar temperature and moisture properties throughout it.
[A]: Which of the following is true regarding the properties of an air mass?


[Q]: Lava that enters the water is called pillow lava.
[A]:
Lava that enters the water is called what?