Natural selection
6 practice questionsBiologyStep-by-step solutions
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1
Variation within a species is important for evolution because it:
A.Prevents reproduction
B.Provides the raw material on which natural selection acts
C.Stops mutations
D.Eliminates all differences
2
Darwin proposed that evolution occurs primarily through:
A.Natural selection
B.Spontaneous generation
C.Use and disuse only
D.Genetic engineering
3
Natural selection acts directly on which variation?
A.Nonheritable choices only
B.Random classroom seating
C.Temporary hairstyle
D.Heritable variation affecting survival or reproduction
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