In order for the medium ground finch to evolve into the large ground finch over a 46-year period, what environmental scenario would have to occur?
A) No selective pressure from the environment
B) Constant selective pressure from the environment
C) An isolated fit of extreme selective pressure from the environment followed by no selective pressure at all
D) Constantly changing selective pressure from the environment

Question

Quizplus · Accepted Answer

To evolve from one species to another, there needs to be selective pressure from the environment that favor traits beneficial for survival and reproduction. In this case, the large ground finch evolved from the medium ground finch, which suggests a constant and sustained selective pressure that favored larger beaks. This is supported by the fact that the large ground finch feeds on harder and tougher materials that require a larger beak, whereas the medium ground finch feeds on softer materials with a smaller beak. Therefore, the best choice is B - constant selective pressure from the environment.

In Order for the Medium Ground Finch to Evolve into the Large