Evolution and Natural Selection

Who developed the theory of natural selection?

• Jean-Baptiste Lamarck

• Charles Darwin

• James Hutton

• Gregor Mendel

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What is evolution?

• How different organisms developed from a common ancestor; change over time

• How likely an individual is to survive and reproduce based on its traits

• The process by which those with the highest fitness pass on their genes

• The process where organisms acquire a trait in their lifetime and pass it on

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Does evolution describe a change in an individual or a population?

• Individual

• Population

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Artificial Selection can be defined as...

• the selective breeding of organisms by humans for specific, desirable traits

• the change in characteristics of a population from one generation to another

• the process where organisms with certain traits are better able to survive and reproduce

• what happens when there is a sudden decrease in population size, such as when there is a natural disaster

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Which is an example of artificial selection?

• A farmer collects seeds from his largest fruit and replants only these seeds

• A rancher chooses to breed his longest-horned bull to produce more long-horned cattle

• A dog breeder chooses which dogs to mate to produce offspring that do not shed

• All of these are correct

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Natural Selection is...

• selective breeding where humans decide which traits are desired

• a change in characteristics from one generation to the next

• the process where individuals with traits that make them better adapted to their environment survive and reproduce

• a trait that increases fitness

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Another name for natural selection is...

• hybridization

• bottleneck effect

• inheritable variation

• survival of the fittest

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What is an example of natural selection?

• tortoise population that eats tall cacti develops longer necks over time

• a dog breed becomes smaller because of human demand

• a white moth is predated on a dark tree

• a population of trees is killed by a large flood

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A trait that allows some organisms to survive while others do not is a/an...

• evolution

• mutation

• adaptation

• inheritable trait

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Which is an example of an adaptation?

• A group of rabbits have thick fur to stay warm in the winter

• A group of moths have darker wing colors to blend in to the trees

• A bird has a long thin beak to eat insects on cacti

• All of these are correct

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