Natural Selection

Natural Selection is driven by a change in the environment and survival of the

• Earth

• Fastest

• Fittest

• Biggest

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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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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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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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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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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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What is most likely to happen to moth populations in the picture shown?

• Light moths--hunted easily, dark moths--population increase

• Dark moths--hunted easily, dark moths--population increase

• Light moths--hunted easily, light moths--population increase

• Lights moths will change their color to match dark moths.

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A species could go extinct if:

• food becomes more plentiful.

• members of the species have adaptations to enhance survival.

• the environment changes drastically and no one can adapt.

• there is less competition for resources.

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