selective breeding versus natural selection

Selective breeding is...

• a process to create an organism with desired traits from parents with those desired traits

• natural method of producing offspring with desired traits

• creating a new species

• making organisms reproduce during times of stress

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The purpose of selective breeding is to

• Get bigger animals and plants

• Get smaller animals and plants

• Create animals and plants with desirable traits

• Create animals and plants with bad traits

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When selective breeding food crops what might a farmer select for?

• The plant the produced the most grain

• The plant the produced the largest sized grain

• The plant that was the most disease resistant

• The plant that was the smallest

• The smelliest plant

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Evidence shows that the wolf is the ancestor to all of the breeds of dogs shown below. How did this variation arise in a relatively short period of time?

• Genetic manipulation

• Natural selection

• Random chance

• Selective breeding

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Problems with animals that are selectively bred include:

• Being more disease resistant

• Producing more meat

• Being more likely to suffer from genetic disease

• Being more genetically diverse

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Natural selection

• organisms better adapted to their environment tend to survive and produce more offspring

• process used by humans to develop new organisms with desirable characteristics

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Selective breeding

• organisms better adapted to their environment tend to survive and produce more offspring

• process used by humans to develop new organisms with desirable characteristics

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"Survival of the fittest" describes which theory

• Natural selection

• Selective breeding

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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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