Evolution

Organisms with a common ancestor have features of different functions but similar structures:

• Homologous structures
• Analogous structures
• Vestigial structures

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Does the following provide evidence of evolution?

• No, the image depicts analogous structures
• Yes, the image depicts homologous structures

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Which of the following is NOT a piece of evidence to support the Theory of Evolution?

• Fossils
• Early development (embryos)
• Homologous structures
• Mitosis

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Similar body structures that related species have inherited from a common ancestor are called

• DNA
• Homologous Structures
• Analogous Structures
• Body Type

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What similarities in development lead scientists to infer that opossums, chickens, salamanders, and fish share a common ancestor?

• All have a tail and tiny slits in their throats during early development
• All have a tail after they were born
• All can swim
• All come from a hatched egg

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Why do scientists classify fish, amphibians, reptiles, birds, and mammals together in one group?

• They all came from dinosaurs
• They all have an internal skeleton with a backbone
• They are all invertebrates 
• They all live on land

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The more closely related species are, the more similar their DNA sequences.

• True
• False

What have scientists learned about the elephant shrew based on DNA evidence?

• They are more closely related to elephants than shrews
• They are more closely related to shrews than elephants
• They are not related to elephants or shrews
• They are not mammals 

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Which of the following is true about evolutionary relationships of organisms?

• A) Scientists can compare protein structure to determine how closely two species are related
• B) A branching tree shows how scientists think different groups of organisms are related
• C) None of the above
• D) Both A and B

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When a group of individuals remains isolated from the rest of its species long enough to evolve different traits, a new species can form.

• True
• False

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