Evidence of Evolution

Body structures with similar parts but different functions are called:

• vestigial structures

• homologous structures

• adaptive structures

• analogous structures

The study of embryos of various organisms to show a common ancestor is called:

• natural selection

• embryology

• speciation

• evolution

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Two organisms that are closely related would have:

• similar DNA sequences

• exactly the same DNA sequences

• no proteins in common

• completely different DNA sequences

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What does Darwin's theory of evolution suggest?

• species change over time

• extinct species are not related to living species

• different species can interbreed

• animals that look alike are most closely related

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Lizards, birds, humans and whales share:

• vestigial structures

• analogous structures

• homologous structures

• fossil structures

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Which of the following is NOT evidence for evolution?

• Many animals have homologous structures

• Many animals have vestigial structures from an ancestor

• We can observe changes in life forms by observing the fossil record

• Many organisms share the same colour

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How do fossils provide evidence that evolution has happened on Earth?

• Fossils show how the size of certain animals has changed drastically over millions of years

• Fossils show that some species have gone extinct

• Fossils show how life forms present today can resemble those from the past

• Different sedimentary rock layers provide evidence for how the environment has changed over time

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Scientists compare organisms' DNA to support the theory that all species share a common _________________

• separation
• ancestor
• population
• environment

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What can be determined from this diagram?

• The organisms share a common ancestry.

• The organisms belong to the same species

• The organisms are native to the same geographic areas.

• The organisms will grow into anatomically similar adults.

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Recently, scientists have been able to use ___________to find common proteins and amino acids to determine how closely related species are.

• DNA

• Vestigial structures

• Fossils

• Homologous structures

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