Natural Selection Quiz

How do you define Biological Evolution?

• when an organism acquires a new trait
• a change in the frequency of alleles in a gene pool 
• when a new species comes to be

Genetic drift is change in the allele frequency of a population due to...

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

Which of the following is an example of the bottle neck effect?

• Bald Eagles are hunted until near extinction, pop recovers
• Small group of iguanas floats to an island, starts a new pop
• Environ of red fox pop now snowy, gen later pop is all white
• farmer chooses seeds from largest apples to plant next gen.

What word describes a trait that helps an organism survive in its environment?

• natural selection

• mutation

• camouflage

• adaptation

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All mutations and adaptations usually lead to what process?

• selective breeding
• behavioral
• natural selection
• genetic engineering

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Which organisms are most likely to survive?

• the best adapted
• the fastest
• the strongest
• the most domesticated (tamed)

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Any inherited trait that gives an organism an advantage in its environment is called ___.

• a mutation
• an adaptation
• evolution
• natural selection

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Almost all adaptations started off as?

• selective breeding
• physiological
• structural
• mutation

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Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they come from dominant alleles.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

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Which of the following evolutionary forces can introduce new genetic variation into a population?

• natural selection and non-random mating
• natural selection and genetic drift
• mutation and genetic drift
• mutation and gene flow

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