Multiple Choice
Examine the two squirrel populations in the accompanying figure. The populations are separated by a geographic barrier. If after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? 
A) Hybrid offspring of the two populations begin to appear.
B) The two populations are not interbreeding freely.
C) One species will increase into a population size twice as large as the other species.
D) Polyploidy is creating new species.
Correct Answer:
Verified
Correct Answer:
Verified
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