Natural Selection

A variation is . . .

• when organisms have camouflage like spots or stripes

• an organism from a different dimension

• when you order different food than your friend

• differences between organisms in the same species

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Variations are caused by . . .

• Kaleidoscopes

• Variety Shows

• Mutations

• A change in phenotypic expression

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Where the better adapted organisms survive to pass traits along to offspring.

• Evolution

• Natural Selection

• Extinction

• Artifical Selection

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The theory of evolution by natural selection means that what is changing over time?

• The inherited traits of a population.

• The acquired traits of a population.

• Hair color and eye color

• Attractive features.

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Why are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.

• Because they come from dominant alleles.

• Because they come from recessive alleles.

• Because the trait is an acquired phenotype.

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The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?

• Dark moth

• Light moth

• Both will be equally successful

• Neither will be successful

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What is the advantage of having different shaped beaks?

• To look different from other species.

• To be able to eat the food readily available in the environment.

• To protect itself against predators.

• To protect itself against prey.

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If an organism can't adapt fast enough, this might happen.

• hibernate

• stay the same

• live longer

• become extinct

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These moths are all the same species. The differences between their wings is an example of ________________

• Natural Selection

• Variation

• Homeostasis

• Extinction

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What is natural selection?

• process in which helpful traits become more common over time

• a trait that helps an organism survive better

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