Unit Test — Unit test Answers

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Which of the following is an example of reproductive isolation?

A
two populations of finches that cannot produce viable offspring
B
two populations of finches that have different feather colors
C
two populations of salamanders that live in different lakes
D
two populations of salamanders that have different tail lengths
22
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In a cladogram, when does a group of organisms branch off?

A
when a new trait evolves
B
when an ancestor becomes extinct
C
when it is discovered
D
when it becomes large enough
23

A bird that preys on moths is introduced to the habitat with moths and trees like the ones shown below. What will most likely happen to the population of moths in this habitat?

Question illustration
A
The population of moths will eventually become extinct.
B
The moths will evolve from dark to light due to a selective pressure.
C
The dark colored moths will experience disruptive selection.
D
The alleles that determine light and dark color in moths will equalize.
24

Why are the Miller-Urey experiments essential to the theory of evolution?

A
They showed that life can only come from life.
B
They showed that electricity can create life.
C
They showed how organic molecules could be made from Earth's early atmosphere.
D
They showed the role that natural selection played in the evolution of modern day organisms.
25

Which best describes biogeographic isolation?

A
It always leads to the formation of new species.
B
It cannot lead to evolution.
C
It is a mechanism for evolution.
D
It occurs only through geographic forces.

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