The species of freshwater fish (Salvelinus spp.) in the lakes of Switzerland, Scandinavia and Great Britain could interbreed but do not. Almost every lake has a different form of these fish. What is the most likely reason don’t these fish interbreed?(1 point)

Question

Responses

They are gametically isolated
They are gametically isolated

They are behaviorally isolated
They are behaviorally isolated

They are temporarily isolated
They are temporarily isolated

They are geographically isolated

Answer 1

The most likely reason these fish do not interbreed is that they are behaviorally isolated. While they might be capable of interbreeding (as suggested by the fact that they belong to the same genus), differences in mating behaviors, such as mating calls, courtship rituals, or spawning times, can prevent them from mating with each other. This kind of isolation is common in closely related species that coexist in the same environment.