Respuesta :
Answer:
Reproductively
Explanation:
The biological species concept defines species on the basis of reproductive isolation. A group of individuals that can interbreed among themselves to produce fertile and viable progeny makes one biological species. These individuals of one species are reproductively isolated from the individuals of the other species.
This means that the organisms of two different species can not interbreed. Even if they interbreed, the hybrid zygote is not viable or is sterile. These mechanisms that do not allow mating between the organism of two different species are collectively known as reproductive isolation.
