Here is the complete question:
Jezelyn needs to create a project that shows reproductive isolation in action and decides to make a video. Which of the following would make the best project?
A. A video that shows a large river that has penguin populations on both sides.
B. A video that shows penguin species that have different mating dances.
C. A video that shows a penguin that is laying eggs.
D. A video that shows penguins in a tidal pool and an open ocean.
ANSWER
The correct option is B.
Reproductive isolation refers to evolution mechanisms that make it impossible for member of different species from successfully mating or producing fertile offspring. There are two different types of barriers that can prevent different species from mating, these are prezygotic and postzygotic barriers.
Prezygotic barriers are those hindrances that prevent different species from producing offspring by preventing formation of zygote. An example of this barrier is difference in courtship behaviors. Post zygotic barriers prevent offspring produced by different species from being fertile, that is, they are sterile.
