Linked from
The 16 pages that link to Gonad, each with the reason it gives.
Steroid hormoneRelated: Gonads produce major reproductive steroid hormones.
AndrogenRelated: Testes and ovaries are major sources of androgen production.
HermaphroditismRelated: Gonads are among the reproductive structures involved in biological sex.
Biological sexRelated: Gonadal anatomy is one major basis for classifying reproductive sex.
ScyphozoaRelated: Scyphozoan medusae produce eggs or sperm in gonadal tissues.