A Single Population Becomes Separated by a Geographic Barrier,and Each

question 3

Multiple Choice

A single population becomes separated by a geographic barrier,and each population acquires genetic differences.Which of the following could happen if this barrier is removed and the two populations interact and attempt to mate?

• A)Reproductive isolating mechanisms may not have evolved and thus the two species could successfully mate.
• B)Prezygotic isolating mechanisms may have evolved,thus preventing the two populations from mating.
• C)Postzygotic isolating mechanisms may have evolved,thus preventing the two populations from producing viable or fertile offspring.
• D)All of the above could happen.

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Definitions:

Gross Domestic Product

A measure of the economic production of a country within a given time period, calculated by adding the value of all goods and services produced within that country.

Charlie Chaplin

A British comedian, filmmaker, and composer who became one of the most iconic figures in the silent film era with his on-screen character, "The Tramp."

Consumption Spending

Expenditures by households on goods and services, excluding new housing.

Gross Domestic Product

The total monetary value of all goods and services produced within a country's borders in a specific time period, used as a broad measure of economic activity.