Two islands are found in the middle of the Pacific Ocean, isolated from any other land mass. These two islands were at one time connected by a land bridge and are of recent origin. They have identical plant and animal life and are separated by 50 miles of ocean. Assuming different selection pressures, which of these island populations would be most likely to be impacted by reproductive isolation on these islands:

A. Dandelions, with airborne seedsB. Coconuts with floating seedsC. Birds
D. ButterfliesE. Mice

The inability of a species to breed successfully with related species due to geographical, behavioral, physiological, or genetic barriers or differences.

What are examples of reproductive isolation?

An example of reproductive isolation is in changes in bird song from different species of finch on the Galapagos island. Females of one species of finch do not recognize the bird song of males. This is a pre-zygotic barrier.

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