Evolutionary Theory

(a)   is the fact that organisms change over time and are related through common ancestors.

• Homologous Structures
• Hereditary
• Evolution
• Survival of the fittest

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(a)   occurs when individuals within a population with the most favorable traits for an environment survive and pass on those traits.

• Descent with Modification
• Natural Selection
• Homologous Structures
• Use or Disuse

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Farmers breed cows to produce high amounts of milk. This is an example of...

• Natural Selection 

• Variations in a species 

• Selective Breeding 

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Where the better adapted organisms survive to pass traits along to offspring.

• Evolution

• Natural Selection

• Extinction

• Artificial Selection

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In natural selection, the selective agent is the

• humans

• mutations

• breeders

• environment

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This image shows that 

• These animals have no simliarities in their structures. 

• two different species may have evolved from a common ancestor. 

• These animals are from the same species. 

• These animals likely evolved from different ancestors due to their differences. 

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This kind of structure is when the structures have the same function but have a different structure. (bird wings and bat wings)

• analogous structure

• homologous structure

• vestigial structure

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According to this data, the unknown bacterial species is most closely related to: 

• Species I

• Species II

• Species III

• Species IV

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When you compare DNA or proteins to support evolution, you are using what kind of evidence?

• anatomical evidence

• molecular evidence

• fossil evidence

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There are three species of birds on an island.  Bird A has a heavy bill for eating seeds.  Bird B has a pointed bill for eating insects.  Bird C has a sharp bill for eating both insects and seeds.  If all insects on the island suddenly disappeared, which bird or birds would be the LEAST affected? 

• Bird A

• Bird B

• Bird C

• Bird A and Bird B

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