An example of a grad-school level question?
Which best explains why children resemble their parents?

An example of a grad-school level question?
Which best explains how most soils are alike?

An example of a grad-school level question?
In humans, the gene for a free earlobe [E] is dominant over the gene for an attached earlobe [e]. If one parent has a free earlobe [ Ee ] and the other parent has an attached earlobe ( ee ), what is the probability that their offspring will have an attached earlobe?

An example of a grad-school level question?

The largest body in our solar system is