Separate-sexed

Describing organisms, particularly animals, that have distinct male and female individuals, each possessing the reproductive organs necessary for their respective roles in sexual reproduction. This contrasts with hermaphroditic species, which possess both male and female reproductive organs within a single individual. Separate-sexed species rely on the interaction between two different sexes to reproduce, involving the production and fusion of gametes (sperm and eggs) from each sex. This separation allows for sexual selection and genetic variation, promoting adaptation and diversification within a population.

Separate-sexed meaning with examples

• Many mammals, like lions, are Separate-sexed, with distinct physical characteristics differentiating males and females. This sexual dimorphism often plays a role in mate selection and social hierarchy within the pride. Reproduction hinges on interaction between a male and a female, which involves courtship displays and breeding rituals.
• The vast majority of bird species are separate-sexed; for example, the vibrant plumage of male peacocks is a prominent display to attract females. Copulation, an essential stage of their breeding behavior, allows for sperm transfer to fertilize eggs. Then females typically incubate the eggs.
• Fish exhibit diverse reproductive strategies. Some species of fish are Separate-sexed, relying on external fertilization. A male releases sperm and a female releases eggs into the water, increasing the chances of fertilization. Other species utilize internal fertilization.
• The population of many insect species consists of Separate-sexed individuals; for instance, male butterflies are often brightly colored compared to their female counterparts. Chemical signaling is another crucial factor in mating habits, as they use pheromones to attract mates, guiding the reproduction cycle.
• Among reptiles, most species, like crocodiles, are separate-sexed. They depend on internal fertilization. The sex of offspring may be determined by incubation temperature in some reptile species. They display a range of mating systems.