Measuring Populations Answers

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Why do disruptive selection pressures tend to favor rapid evolutionary changes?

A
They result in sudden gene frequency changes.
B
They eliminate extreme genetic traits.
C
They select for one variation of a genetic trait.
D
They result in environmental adaptation.
2
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What are the three common patterns of population distribution?

A
clumped, random, and curved
B
evenly spaced, clumped, and curved
C
clumped, evenly spaced, and random
D
random, curved, and evenly spaced
3

Which of the following is the most obvious sign of cluster distribution in termites?

A
They are insects.
B
They are detritivores.
C
They are social insects.
D
Many species of termites are considered pests.
4

With regards to a “Data (Age) Structure Diagram”, which of the following is an indicator of a rapidly growing population?

A
a large elderly population
B
a large middle age population
C
a large teenage population
D
a large child population
5

Natural selection is an evolutionary mechanism by which _______.

A
advantageous traits are eliminated in a population
B
advantageous traits become more common in a population
C
inherited traits pass consistently through generations
D
organisms choose which traits to look for in their offspring
6

Disruptive selection events select for _______.

A
common traits
B
genetic uniformity
C
camouflage traits
D
extreme traits
7

Directional selection only occurs in response to naturally occurring events.

A
T
B
F
8

Which of the following best describes the relationship between jaguars and panthers?

A
Panthers and jaguars are separate species.
B
Panthers are jaguars with predominantly dark or black pigmentation.
C
Juvenile jaguars are black and called panthers.
D
During winter Jaguars’ coats change from spotted to black.
9

Which of the following is not a reason for cluster distribution of organisms?

A
localized availability of resources
B
herd behavior
C
hive behavior
D
territorial behavior
10

Directional selection can be distinguished from disruptive selection by _______.

A
the elimination of extreme variations of traits
B
selection for two extreme variations of a trait
C
the preservation of gene frequencies
D
selection for one extreme variation of a trait

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