Evolution and Natural Selection

According to Darwin’s theory of natural selection, individuals who survive are the ones best adapted for their environment. Their survival is due to the 

• possession of adaptations developed through use.
•  possession of inherited adaptations that maximize fitness.
• lack of competition within the species.
• choices made by plant and animal breeders.

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____ is when members of a species that are best suited for their environment survive and reproduce at a higher rate than other members of the species

• natural selection
• artificial selection
• speciation
• adaptation

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Which is necessary for speciation to occur?

• adaptation
• mass extinction
• isolation
• acquired traits

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Which of the following means "change over time"

• natural selection
• speciation
• evolution
• isolation

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

• theories
• variations
• adaptations
• genes

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___ are mistakes in the DNA that cause variation within a species.

• mutations
• adaptations
• speciations
• isolations

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Any inherited trait that gives an organism an advantage in its environment is called ___.

• a mutation
• an adaptation
• evolution
• natural selection

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Organisms with the most beneficial traits will survive.  This is commonly known as ___.

• theory of evolution
• variations
  
• survival of the fittest
• ecosystems
  

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Most organisms have more offspring than will survive 

• True
• False

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Why are advantageous traits more likely to be passed on to the offspring?

• Because parents with those traits can teach their offspring
• Because parents with those traits can surive and reproduce better
• Because parents with those traits care more about their offspring

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