Evolution and Natural Selection Review

Change over time...

• Evolution

• Nucleotide 

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Charles Darwin came up with this theory 

• Natural Selection

• Mutation

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Darwin wrote that organisms with traits that are best suited to the environment will ________________

• increase in number
  

• become extinct
  

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What characteristic did Darwin observe about the finches on the Galapagos Islands?

• Their feathers 

• Genotypes 

• Their beaks

• Their body sizes

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What is this an example of? Choose TWO correct answers

• natural selection

• artificial selection

• A new species invading an existing population

• Genetic variation within a species

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Which statement is true comparing natural selection and artificial selection?

• In natural selection, traits benefit humans and in artificial selection, the traits benefit the species

• In natural selection, traits benefit the species and in artificial selection, the traits benefit humans

• In natural and artificial selection, the process takes hundreds of years to occur

• In natural and artificial selection, nature determines what traits will be passed down to offspring.

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Darwin said that the number of offspring an organism has ___________________

• stays the same

• is more than can survive

• is less than needed

A German Shepard would probably not survive in the wild because...

• the dog is mixed.

• the dog is a product of artificial selection and not adapted for the wild.

• the dog is dumb.

• the dog is a product of natural selection and can survive in the wild.

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Organize these options into the right categories

Groups:

(a) Natural Selection

,

(b) Artificial Selection

• Example: breeding only cows that produce the most milk

• Beneficial traits elected by the environment

• Example: camouflage of the peppered moth

• Beneficial traits selected by a breeder

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What is an example of artificial selection?

• Letting dogs choose their own mate

• Letting plants pollinate on their own

• Crossing a labrador and a poodle to create a labradoodle

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