Natural Selection and Genetics Intro

Process by which individuals that are better suited to their environment survive and reproduce most successfully; also called survival of the fittest.

• Extinction
• Speciation
• Natural Selection
• Artificial Selection

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Natural selection explains HOW organisms change over time. What is the process in which populations are changed over time?

• Digestion

• Elimination

• Evolution

• Adaptation

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Another term for Natural Selection is:

• Breeding

• Commensulism

• Communism

• Survival of the fittest

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Mutations are a change in what?

• DNA
• fur color

• genotype
• phenotype

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What word describes a trait that helps an organism survive and reproduce in its environment?

• natural selection

• mutation

• camouflage

• adaptation

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Why is the mouse population changing over time? (You can enlarge the picture by placing your cursor on it.)

• The light mice can reproduce more successfully than the dark mice

• The hawks eat more dark mice than light mice because the dark mice taste better

• The hawks eat more light mice than dark mice because they can see the light mice more easily

• The hawks eat more dark mice than light mice because they can see the dark mice more easily

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The trees these moths used to live on were white, but have been covered in soot from coal factories. Which moth will be more successful in this environment?

• Dark moth

• Light moth

• Both will be equally successful

• Neither will be successful

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Which trait(s) would be considered an adaptation for a moth? (Check all that apply.)

• Flies very slow.

• Wings camouflaged within its environment

• The catepillar stage camouflages within its environment.

• Flies very fast.

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A grizzly bear survives because he is well-adapted (best fit) to his environment. When he reproduces he passes on those traits to his offspring. this process is called

• Natural Selection

• Selective Breeding

• Random mutations

• Variations in a species

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Do organisms "decide" to evolve and change?

• Yes, they know they need to change to survive 
• No, they change because of natural selection

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