Evolution Vocabulary

Variation is

• Difference in the physical traits of an individual from those of other individuals.

• Remnants of organs or structures that had a function in an early ancestor.

• incorporates the theory of gradualism plus the idea that what happened in the past can be observed occurring today

• something mustbeheritabletoundergo artificial selection

What is an example of adaption?

• homologous and vestigial structures are both evidence of common descent

• Beneficial feature that helps survival

• allows an organism to better survive in its environment

• there must be variation in a population for adaptation to occur

What are some examples of vestigial structures

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Humans selecting variations they found useful and bred animals and plants for those traits is an example of

• Variation

• Natural Selection

• Artificial Selection

• Evolution

Analogous structures are

• Study of fossils

• Features with the same function in two organisms but different recent ancestors

• Choosing particular traits for breeding

• Theory that processes that can be seen today also occurred in the past

What is required for natural selection to occur?

• Competition for unlimited resources

• Gradual warming of the Earth

• Environmental disasters

• Genetic variation in species

Which of the following set of evidence best supports the hypothesis that two species are related to each other?

• Presence of homologous structures and similar DNA

• Presence of homologous structures and a similarity in method of reproduction

• Presence of homologous structures and a similarity in diet

• Presence of homologous structures and analogous structures

What is the ability of an organism to survive and reproduce in its environment?

• Theory

• Fossil

• Fitness

• Theory

What is the the process by which individuals are better suited to their environment survive and reproduce successfully

• Theory

• Fossil

• Survival of the fittest

• Theory

What is preserved remains or evidence of an ancient organism?

• Theory

• Fossil

• Survival of the fittest

• Theory