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Home  arrow Chapter 15: Tracing Evolutionary History  arrow Student Home  arrow Pre-Test

Pre-Test



This activity contains 10 questions.

Question 1.
Earth probably formed _____ years ago, and the first life evolved as early as _____ years ago.


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Question 2.

Stanley Miller's experiments involved generating electrical sparks (simulating lightning) in a lifeless vessel containing hydrogen gas, water vapor, methane, and ammonia. The result was that _____.

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Question 3.

Which of the options places major events in the history of life on Earth in the proper chronological order from earliest to most recent?

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Question 4.
Radiometric dating _____.


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Question 5.
What was Pangaea?


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Question 6.
Mass extinctions _____.


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Question 7.

According to the findings of researchers in the field known as "evo-devo," what kinds of genetic changes are required to reshape the body forms of organisms?

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Question 8.
Two species that share similar homologous structures probably _____.


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Question 9.
Which outgroup could be used in a phylogenetic analysis of relationships among all of the existing families of birds?


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Question 10.

Systematic biologists have used a wide variety of traits to reconstruct the phylogenies of particular groups of organisms. Which type of trait can also be analyzed to estimate the divergence times between taxa?

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