An example of a grad-school level question?
A "widow's peak" hairline in humans is coded by the dominant allele W. A straight hairline is coded by the recessive allele w. A man with a homozygous dominant WW produces a zygote with a woman with a heterozygous dominant Ww for the trait. Which allele combinations could occur in the zygote?

An example of a grad-school level question?
A student is shown a slide of cells from a species of producer in a food web. The student observes that the cells have chloroplasts. What conclusion about the food web is best supported by these findings?

An example of a grad-school level question?
What is a source of food and growth for a mushroom?

An example of a grad-school level question?

A new battery claims that it "lasts twice as long as competing batteries under the same loading conditions." Which comparison of the battery with competing batteries would validate this claim?