Given a scientific passage and an answer, generate a question for the given answer.
Q: Passage: The reproductive system in both males and females consists of structures that produce reproductive cells, or gametes, and secrete sex hormones. A gamete is a haploid cell that combines with another haploid gamete during fertilization. Sex hormones are chemical messengers that control sexual development and reproduction. The male reproductive system consists of structures that produce male gametes called sperm and secrete the male sex hormone testosterone. Answer: reproductive
A:
What system in both males and females consists of structures that produce reproductive cells, or gametes, and secrete sex hormone?