Which hormone is NOT produced by the gonads?

• A. Testosterone.
• B. Prolactin.
• C. Estrogen.
• D. Progesterone.

Answer: (B)

Verified step by step guidance

1. Identify the function of the gonads: The gonads, which are the testes in males and ovaries in females, are responsible for producing sex hormones.
2. List the hormones produced by the gonads: In males, the testes primarily produce testosterone. In females, the ovaries produce estrogen and progesterone.
3. Understand the role of prolactin: Prolactin is a hormone primarily associated with lactation and is produced by the anterior pituitary gland, not the gonads.
4. Compare the list of hormones: Testosterone, estrogen, and progesterone are all produced by the gonads, while prolactin is not.
5. Conclude which hormone is not produced by the gonads: Based on the comparison, prolactin is the hormone that is not produced by the gonads.