Given a scientific passage and an answer, generate a question for the given answer.

Example Input: Passage: Dermal tissue covers the outside of a plant. It's like the plant's skin. Cells of dermal tissue secrete a waxy substance called cuticle. Cuticle helps prevent water loss and damage to the plant. Answer: cuticle
Example Output: What do cells of dermal tissue secrete?

Example Input: Passage: In many ways, humans are unique among mammals. For example, we have bigger brains and a greater ability to learn than any other species in the mammalian class. In many ways, however, we are typical of the mammalian order to which we belong. That order is the Primate Order. To fully understand what it means to be human, you need to know more about this fascinating order of mammals. Answer: humans
Example Output: What mammalian class has the greatest ability to learn?

Example Input: Passage: Usually, traits are polygenic when there is wide variation in the trait. For example, humans can be many different sizes. Height is a polygenic trait, controlled by at least three genes with six alleles. If you are dominant for all of the alleles for height, then you will be very tall. There is also a wide range of skin color across people. Skin color is also a polygenic trait, as are hair and eye color. Answer: polygenic traits
Example Output:
What is the term for traits that show wide variation, such as height, skin color, and eye color?