Evolution Review

Sometimes, organisms that are not closely related look similar because of

• convergent evolution

• divergent evolution

• mutations

• classification

Charles Darwin's observation that finches of different species on the Galapagos Islands have many similar physical characteristics supports the hypothesis that these finches

• have the ability to interbreed

• acquired traits through use and disuse

• all eat the same type of food

• descended from a common ancestor

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Natural selection acts directly on

• phenotypes

• genotypes

• allele

• genes

What kind of population does genetic drift occur in?

• very large

• small

• new species

• unchanging

A pattern in which species experience long, stable period interrupted by brief periods of rapid evolutionary change is called

• convergent evolution

• divergent evolution

• adaptive radiation

• punctuated equilibrium

Although they live in the same habitat, different species of Birds of Paradise use different techniques to impress their mates. What can be inferred from this information?

• the two species do not interbreed because of geographical isolation

• the two species do not interbreed because of behavioral isolation

• the two species do not interbreed because of temporal isolation

• the two species do not interbreed because of mechanical isolation

If a snake population experiences a new color skin due to a mutation, which factor might determine whether the frequency of the new allele will increase?

• How many other alleles are present

• If the new skin color makes the snakes more fit for their environment

• how many phenotypes the population has

• whether the mutation was caused by nature or human intervention

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What type of selection is depicted in the picture? 

• stabilizing 
• directional 
• disruptive 
• the answer is not here

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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

• stabalizing
• disruptive
• direction
• none of the above

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_{What type of selection?}

• Directional 
• Stabilizing
• Disruptive

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