Two populations of frogs live separated by the Amazon River. What experiment could be designed to test whether the two population are one species or two?

Sample Response: After the drought, there was very little water and many plants died, so the remaining environment was mostly brown. Because of this, having brown coloration was a favorable adaptation for frogs. The brown frogs are the ones that survived and reproduced, causing the number of brown frogs to increase. Having green coloration, on the other hand, was an unfavorable adaptation because they were unable to blend in with the surrounding environment. They became less likely to survive and reproduce, causing the number of green frogs to decrease.

Organisms of the same species have the ability to mate and produce fertile offsprings.

If we want to check whether the two populations of frog belong to the same species then we can conduct an experiment in which we allow the organisms of the two populations to mate with each other. Id the organisms mate and produce fertile offsprings, this means that the two frogs belong to the same species.