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Measuring Populations — Unit test Answers

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1
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Bottleneck events are always caused by the death of most of a species’ population.

A
T
B
F
2
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Which of the following is most likely an example of genetic drift resulting from the founder effect?

A
The species’ physical habitat is limited.
B
The population expresses a mix of dominant and recessive traits.
C
The species occupies a small, specific niche.
D
A population commonly expresses traits that are otherwise rare in the species.
3

After hunting by European settlers, the bison population of 60 million was reduced to _______ of its original size.

A
1 : 60
B
1 : 600
C
1 : 6,000
D
1 : 60,000
4

Explain how the method of mark and recapture works to determine population size.

Answer not available
5

Explain why random distribution patterns for species are the rarest in nature.

Answer not available
6

Which of the following is not true about the distribution of species?

A
A species’ native range does not include areas where it was introduced by humans.
B
Some species have a range they inhabit only for breeding.
C
Seasonal ranges include areas where species are found for part of the year.
D
All the organisms in an ecosystem share distribution patterns.

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