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

[EX Q]: Passage: The alkaline earth metals include beryllium, magnesium, calcium, strontium, and barium. Strontium and barium react with air and must be stored in oil. Answer: alkaline earth metals
[EX A]: Beryllium, magnesium, calcium, strontium, and barium are classified as what type of metals?

[EX Q]: Passage: All living things are capable of reproduction, the process by which living things give rise to offspring. Answer: reproduction
[EX A]: All living things are capable of what process whereby living things give rise to offspring?

[EX Q]: Passage: 15.1 Mendelian inheritance has its physical basis in the behavior of chromosomes. Answer: chromosomes
[EX A]:
Mendelian inheritance has its physical basis in the behavior of what?