the males compete to fertilize
The females choose mates - apex
The term that describes the behaviors between males and females of the same species for the purposes of mating is "courtship". Most animals have a courtship ritual, such as dancing, touching or showing how beautiful they are.
Female lizards can be larger, smaller, or the same size as males, depending on the species. In some species, females are larger to accommodate egg production, while in others, males are larger for territorial or mating purposes. Size dimorphism varies among lizard species.
Ultimately the sole cause of different species is restricted breeding. Males and females of one species will only mate with males and females of the same species. Now there may be a secondary factor that is the main cause, such as geographic isolation. The two species develop separately because there is a mountain range in between them and the males of each type can't get access to the females of the other type. But as you can see it is the restricted breeding that ultimately does it. Now for two species of stickleback in the same lake. It may be that the females are finicky in their chose of mates and prefer male with a certain colour pattern, or they prefer nests built at a certain depth which males have an inclination to build at different heights.
For some crab species, claws are different between males and females, like larger claws on male fiddler crabs, or color on blue crabs. All male crabs have a triangular shape near the rear on their underside, though, while females have a broad round marking in that same location.
The scientist could conclude that the females choose mates.
The females choose mates - apex
The females choose mates. (Apex)
The scientist could conclude that the females choose mates.
the males compete to fertilize
Females of which species?
The biological characteristic that defines females across species is the presence of two X chromosomes.
The term "raven" encompasses an entire species, Corvus corax, of which there are both males and females.
All animal species have male as well as female species.
60% ?
From females of any mammal species.
They are both mature females of their species.