Use the Following Description to Answer the Question

question 62

Multiple Choice

Use the following description to answer the question.
In the oceans on either side of the Isthmus of Panama are 30 species of snapping shrimp; some are shallow-water species, others are adapted to deep water. There are 15 species on the Pacific side and 15 different species on the Atlantic side. The Isthmus of Panama started rising about 10 million years ago. The oceans were completely separated by the isthmus about 3 million years ago.
In the figure, the isthmus separates the Pacific Ocean on the left (side A) from the Atlantic Ocean on the right (side B) . The seawater on either side of the isthmus is separated into five depth habitats (1-5) , with 1 being the shallowest.

Which habitats should harbor snapping shrimp species with the greatest degree of genetic divergence from each other?

• A) A1 and A5
• B) A1 and B5
• C) A5 and B5
• D) Both A1/A5 and B1/B5 should have the greatest, but equal amounts of, genetic divergence

---

Definitions:

Function

A relationship involving various inputs and permissible outputs, with the premise that each input is connected to exactly one output.

Thermostat

A device used to maintain the temperature of a system at a desired setpoint by regulating the flow of heat energy.

Degrees Fahrenheit

A scale of temperature on which water freezes at 32° and boils at 212° under standard conditions.

Domain

The collection of all potential x-values for which a given function exists.