A Scientist Finds What She Thinks Is a New Species

question 14

Multiple Choice

A scientist finds what she thinks is a new species of rodent on a small Pacific island.However, some similar-looking rodents inhabit some nearby islands.She mates the new rodent with the nearby rodents and gets viable but infertile offspring.Why?

• A)The old and new rodents underwent vicariance, and their hybrid offspring were sterilized by adaptive radiation.
• B)The new rodents probably derive from fairly recent ancestors that experienced dispersive allopatric speciation.
• C)The new and old rodents are both allopolyploid after undergoing sympatric speciation.

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