Fossils, Natural Selection and Evidence of Evolution

The following evidence supports the theory of evolution: Check all that apply.

• similar body structures in organisms

• Similar DNA in organisms

• population trends

• ancient fossils revealing adaptations of organisms

• natural selection

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The preserved remains or physical evidence of an organism that lived in the past are called...

• evolutionary features

• fossils

• mutations

• variations

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What theory proposes that organisms with traits better suited to their environment are more likely to survive and reproduce?

• Acquired Characteristics

• Embryology

• Survival of the Smartest

• Natural Selection

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Evolution typically happens...

• in a few weeks

• over millions of years

• never

• in 100 years

In the phrase "survival of the fittest," the term "fittest" refers to:

• The best-adapted organisms

• The biggest organisms

• The smartest organisms

• The fastest organisms

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the process by which organisms that are best adapted to their environment are most likely to survive and reproduce.

• adaptation

• natural selection

• niche

• competition

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The theory that organisms have slowly changed over time...

• fossil record

• relative dating

• evolution

• adaptation

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Match the following terms with their definitions

• Any variation that makes an organism better able to survive

• Evolution

• a change in a species DNA over time because of natural selection

• Variation

• An inherited trait that makes and individual different

• Mutation

• A permanent change in the DNA

• Adaptation

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Preserved remains or traces of an organism that lived in the past

• fossil record

• species

• fossil

• adaptation

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This is a diagram that shows how scientists think different groups of organisms are related. It can be referred to as a cladogram or phylogenic tree.

• Fossil

• Variation

• Fossil Record

• Branching Tree

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