Suppose That Members of Two Populations Are Separated by a Geographic

question 24

Essay

Suppose that members of two populations are separated by a geographic barrier and begin to diverge genetically. Many generations later, when the barrier is removed, the two populations can interbreed, but the hybrid offspring do not survive and reproduce well. Explain how natural selection might lead to the evolution of more effective prezygotic barriers in these species.

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Definitions:

Jeweller

A person or entity engaged in the business of selling and sometimes manufacturing jewelry.

Commercial Aircraft

Airplanes designated for carrying passengers or cargo as part of a business for profit, excluding military or private aircraft.

Flight Attendant

An airline employee responsible for ensuring the safety, comfort, and needs of passengers during a flight.

Complimentary Locks

Locks provided at no additional cost as a courtesy or as part of a service.