Early in their growth cycle they are females, but in adulthood they can change into males.
Groupers are protogynous hermaphrodites; that is, they first function as females and later transform into males.
Then the gods cut them in two — into males and females, condemned to spend their lives seeking their other half.
After sexual maturity, female groupers can change into males to compensate for population imbalances, becoming "secondary males" in a process called protogyny.
Fertilized eggs develop into females, which can become queens or workers, and unfertilized eggs develop into males, which can do nothing but inseminate females.
Animals with two X chromosomes develop into females; animals with an X and a Y chromosome develop into males.
Queen bees produce some eggs that remain unfertilized and develop into males, or drones, having a mother but no father.
In fish known as wrasses, for example, some large females change into males later in life and have harems of females, while small males remain male for life, mating with females under the large males' control.
The separation of most higher organisms into males and females and the occurrence of several forms of a butterfly of the same species, each coloured to blend with a different vegetation, are examples of polymorphic variation.
But what if you could turn all mosquitoes into males?
Moreover, this findings remains even if we divide our sample into males and females.
