Which of the following is an example of a prezygotic barrier that can isolate two species living in the same geographic area?
A) The members of two populations of birds living in neighboring forests freely interbreed.
B) One species of cichlid has the same mating behavior as another cichlid species in the same lake.
C) The gametes of one species of orchid in a rainforest are unable to fuse with the gametes of another species of orchid in the same rainforest.
D) Two species of wildflowers mate and produce a hybrid that is capable of successfully breeding with either species.

Question

Quizplus · Accepted Answer

Prezygotic barriers occur before fertilization, preventing the formation of a zygote. Option A states that two populations of birds freely interbreed, meaning that there is no prezygotic barrier preventing gene flow between these populations. Option B states that two cichlid species have the same mating behavior, which does not prevent interbreeding. Option D states that two wildflower species can produce a hybrid that is capable of interbreeding with either species, which also does not constitute a prezygotic barrier. Option C states that two species of orchids in the same rainforest are unable to fuse their gametes, meaning that there is a prezygotic barrier preventing gene flow between these species.

Which of the Following Is an Example of a Prezygotic