Evolution Review KHS

Why would a fox have a fur coat that turns white in the winter and brown in the summer?

• The foxes genes helped the foxes ancestors survive and reproduce.

• The fox inherited genes for white fur from its mother and genes for brown fur from its father.

• The foxes parents learned how to change their fur color and passed the trait to their offspring.

• The fox eats food in the summer that changes the fur color.

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Wisdom teeth have no purpose and are often removed to make room for the other teeth. Wisdom teeth are

• homologous structures

• vestigial structures

• analogous structures

Which of the following would be a good adaptation for living in a desert?

• having thick stem to store water

• being active during the middle of the day

• having large leaves to absorb sunlight

• having dark feathers to absorb sunlight

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Why do woodpeckers have long beaks to dig into trees for insects?

• As insects became more common, birds that ate more insects grew longer beaks.

• The long beak is an adaptation that helps the bird eat more insects.

• A harmful mutation occured.

• The long beak helps woodpeckers fight off predators.

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Recent fossils can be found in upper rock layers. What two scientific ideas does this support?

• The law of superposition and the periodic nature of the elements

• Cell theory and the theory of evolution

• the theory of evolution and the law of superposition

• the periodic nature of the elements and cell theory

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Who survives according to the theory of evolution

• The first born offspring

• The largest offspring

• The offspring best adapted to the environment

• The offspring best equipped for movement

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Are the following structures homologous or analagous?

• Homologous

• Analagous

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Do these homologous structures share a common ancestor?

• yes

• no

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Are the bird and Bat wing structures homologous or analogous?

• homologous

• analogous

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What best describes the relationships among the organisms shown?

• embryological similarities

• superposition similarities

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