At the Beginning of a Research Project on Egg Laying

question 28

Multiple Choice

At the beginning of a research project on egg laying in seagulls,a researcher noted that the birds laid an average of 7-9 eggs per clutch.After studying the population for 15 generations,the researcher noted that the birds were now laying 3-4 eggs per clutch.What type of natural selection is occurring in the population of gulls?

• A)stabilizing
• B)directional
• C)disruptive
• D)There is no selection occurring in this population.

---

Definitions:

Immigration

The action of coming to live permanently in a foreign country, often for personal, economic, or safety reasons.

Gulf Oil Spill

Environmental disaster that occurred in 2010 after an explosion on the Deepwater Horizon oil rig. Hundreds of millions of gallons of oil were spilled into the Gulf of Mexico, resulting in one of the largest environmental calamities in human history.

Deregulation

The reduction or elimination of government power in a particular industry, usually enacted to create more competition within the industry.

Department Of Homeland Security

A federal agency in the United States created in the wake of the September 11 attacks to coordinate national efforts in safeguarding the country against terrorism and responding to natural disasters.