All species reproduce sexually, and have both female and male gonad.

They are hermaphrodites, and the male gonads mature first.

The male gonads do not like heat.

You will remember that a single male gonad cell produces two groups of gametes, complementary in their chromosome patterns.

In mature individuals, the male gonads are cream coloured and the female gonads bright red.

The testicles are the male gonads.

The male gonads mature first.

It causes the destruction of starfish ovary and eggs to cause castration (the male gonads are usually unaffected).

The spermatozoa of animals are produced through spermatogenesis inside the male gonads (testicles) via meiotic division.

The ovaries are the female gonads, and they are developed from the same embryonic tissue as the male gonads (testicles).

'Testicle' could not stand alone to designate unambiguously the male gonad; it no longer carries the modifiers 'masculine' or 'feminine'.

Imposex, the occurrence of male gonads on female whelks, has been detected since the early 1990s, and is thought to be a product of the shipping industry.

The testicle (from Latin testiculus, diminutive of testis, meaning "witness" of virility, plural testes) is the male gonad in animals.

The gonads, in a "bipotential state," may develop into either testes (the male gonads) or ovaries (the female gonads), depending on the consequent events.

In a study in the Gulf of Mexico, where this species is a dominant member of the shallow reef community, it was found that the female gonads began developing in January and the male gonads in April.