Natural Selection and Selective Breeding

"Survival of the fittest" describes which theory

• Natural selection

• Selective breeding

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Which is an example of selective breeding?

• A giraffe's long neck.

• Clipping a horse's tail so it's not too long.

• Training a horse to run faster.

• Cross breeding a labrador retriever with a poodle .

The differences among a species, like different bird beaks, are called

• genes.\

• variations

• traits

• alleles

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Which organisms are most likely to survive?

• The strongest

• The best adapted

• The fittest

• The most athletic

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The long and sharp beak of a woodpecker is an example of

• natural selection

• selective breeding

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Natural selection is where ___________ decides which traits should be passed on.

• nature

• a human

• traits

• evolution

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Selective breeding is where _____________ decides which traits should be passed on.

• nature

• a human

• traits

• evolution

Which statement best describes natural selection?

• A lion eating another animal.

• A farmer selecting the cows that will breed.

• A dog breeder.

• A botanist creating a new colored flower.

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Which statement best describes selective breeding?

• Survival of the fittest.

• Evolution.

• Breeding for a desired trait.

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How can farmers best use selective breeding to increase apple production?

• By limiting the number of trees growing so they can have more space.

• By choosing trees that are the largest in size.

• By increasing the amount of water and fertilizer the trees receive.

• By choosing trees that consistently have the most apples.

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