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WorksheetsNatural Selection Scenarios
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
What type of selection is depicted in the picture?
a)
stabilizing
b)
directional
c)
disruptive
2.
Robins typically lay fours eggs. If more then four eggs are produced then the baby chicks are malnourished while smaller egg numbers result in no viable (able to live) baby chicks. This is an example of
a)
stabalizing
b)
disruptive
c)
directional
3.
What type of selection?
a)
Directional
b)
Stabilizing
c)
Disruptive
4.
Which of the three graphs shows stabilizing selection?
a)
A
b)
B
c)
C
5.
Which of the three graphs shows disruptive selection?
a)
A
b)
B
c)
C
6.
If finches with large beaks and finches with small beaks increase in a population while finches with average sized beaks decreases, which pattern of natural selection has occurred?
a)
Directional selection
b)
Disruptive selection
c)
Stabilizing selection
7.
An extreme phenotype is favored causing the alleles to shift toward that phenotype
a)
Disruptive Selection
b)
Directional Selection
c)
Stabilizing Selection
d)
Artificial Selection
8.
Genetic diversity decreases and individuals at the center of the curve have higher fitness.
a)
Disruptive Selection
b)
Directional Selection
c)
Stabilizing Selection
d)
Artificial Selection
9.
What is the advantage of having different shaped beaks?
a)
To look different from other species.
b)
To be able to eat the food readily available in the environment.
c)
To protect itself against predators.
d)
To protect itself against prey.
10.
Occurs when changing environment favours one extreme phenotype
a)
stabilizing selection
b)
Directional selection
c)
Disruptive selection
d)
Outbreeding
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