A geneticist is studying sexual reproduction of a species of butterfly that lives in a very cold climate. He hypothesizes that there should be low genetic diversity because it is well adapted to the cold climate but does not seem to be able to colonize surrounding areas with warmer climates. What important principle is he using to formulate his hypothesis?

It is a stenotopic species.

Explanation:

Stenotopic species are well adapted to specific environmental conditions. Stenotopic species can't colonize new environments because they are adapted to a narrow range of environmental conditions. On the other hand, the eurytopic species can survive and reproduce in a wide range of environments.  

In this case, the geneticist has used a hypothetico-deductive framework, where this butterfly was distinguished by species boundaries based on its sampling distribution.

what tree

explanation: