AP Bio Natural Selection

a bird that can easily outcompete other birds for food and that can produce many eggs has a high

• sexuality
• mutation rate
• fitness
• adaptability

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Which of the following is a true statement about natural selection?

• it is goal directed
• individuals evolve
• variation exists in a population
• acquired characteristics

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The small seeded plants in an area were killed by a fungus. Finches with a small beak cannot crack open the large seeds from the plants that were left. What type of selection is likely to occur?

• directional selection

• stabilizing selection

• disruptive selection

• artificial selection

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A fire has wiped out the vegetation that produces medium sized seeds. As a result, the finches left can feed on seed that are available in two sizes: small and large. What type of selection is likely to take place in this population?

• directional selection

• disruptive selection

• stabilizing selection

• artificial selection

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In Canada, the people have overfished the salmon in a particular river. They catch the larger salmon and throw the smaller salmon back into the river. Over time, what type of selection is likely to take place?

• directional selection

• disruptive selection

• stabilizing selection

• artificial selection

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In a forest in Germany, there is a rat who has three fur coat colors: a light creamy color, a medium tan color, and a dark brown color. In this particular forest, the floor is a medium brown and the intermediate tan color mouse is better camouflaged.

• directional selection

• disruptive selection

• stabilizing selection

• artificial selection

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What type of selection is depicted in the picture? 

• stabilizing 
• directional 
• disruptive 
• the answer is not here

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_{What type of selection?}

• Directional 
• Stabilizing
• Disruptive

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What type of natural selection is this?

• Disruptive Selection
• Directional Selection
• Stabilizing Selection
• Sexy Selection

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Scientists find that most feral cats in a neighborhood have whiskers about 12 cm long. After about 15 generations of stabilizing selection, what would you expect to see?

• even more cats with 12 cm long whiskers
• most cats with less than 12 cm long whiskers
• most cats with more than 12 cm long whiskers
• most cats with whiskers either less than or more than 12 cm long, very few with whiskers 12 cms 

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