Evolution by Natural Selection

Inherited characteristic that increases and organism's chance of reproduction and survival (a)  

• evolution
• theory
• adaptation
• anatomy

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A different form of something

• variation

• ancestor

• structure

• artificial selection

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The selection of useful traits in animals and plants by humans.

• natural selection

• artificial selection

• evolution

• theory

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Individuals that are better suited to their environment survive and reproduce most successfully.

• variation

• natural selection

• structure

• anatomy

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Overall change in a type of organism over time.

• evolution

• natural selection

• anatomy

• ancestor

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Well-tested explanation that unifies a broad range of observations.

• Hypothesis

• Theory

• Structure

• Law

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The form or organism that another organism has descended from.

• Ancestor

• Evolution

• Anatomy

• Adaptation

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Darwin's theory of evolution states that..

• animals with more adaptive variations are more likely to survive and reproduce.

• organisms that are the fittest are always the strongest

• the number of offspring is not related to fitness

• inherited trait are the cause of evolution.

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Darwin's theory of evolution is based on the idea of...

• natural variation and natural selection.

• use and disuse.

• a tendency towards perfect, unchanging species.

• the transmission of acquired characteristics.

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Lamark believed that new adaptations show up because of

• increase in population size

• actions of individuals as they use or don't use a structure.

• an unchanging environment

• natural variations already present in populations