Suppose You Traveled Back in Time and Located the First

question 14

Multiple Choice

Suppose you traveled back in time and located the first animals to have developed feathers.You found that these animals were ground-dwelling ectotherms,able to run quickly,but unable to fly or even glide.You also noticed that males of the species had no feathers at all,while females had bright blue feathers covering their tails.Which hypothesis of feather evolution would these data most support?

• A)Feathers initially evolved to aid in flight.
• B)Feathers initially evolved as a form of insulation.
• C)Feathers initially evolved for use in courtship displays.
• D)All of the above apply.

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Definitions:

George H.W. Bush

The 41st President of the United States, serving from 1989 to 1993, known for his leadership during the end of the Cold War and the Gulf War.

Berlin Wall

A fortified barrier that divided Berlin from 1961 to 1989, built by the German Democratic Republic (East Germany) to prevent East Germans from fleeing to West Berlin and West Germany.

East Germany

Officially the German Democratic Republic (GDR), a state that existed from 1949 to 1990 in the eastern part of Germany, established after World War II and during the Cold War.

CIA

The Central Intelligence Agency, a civilian foreign intelligence service of the federal government of the United States, tasked with gathering, processing, and analyzing national security information.