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Evolution: Natural and Artificial Selection- 10.3, 11.1-2
Based on the McDougal Littell Biology Textbook
8
Biology
9th Grade
02/16/2010

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Term
How is natural selection different from artificial selection?
Definition
In artificial selection, humans select traits thought to be advantageous, whereas in natural selection, nature selects advantageous traits.
Term
What are the four main principles in the theory of natural selection?
Definition
Variation, adaptation, overpopulation, descent with modification. (Think- DOVA)
Term
What are some of the limiting factors on population?
Definition
Food, water, shelter, disease, predators
Term
What is fitness?
Definition
The measure of an organism's ability to survive and produce more offspring
Term
What allows species to survive in the ever-changing environments?
Definition
Adaptations (variations)
Term
True or false. A change in environment can cause natural selection to select against a different trait than before.
Definition
True. Example- peppered moths
Term
What is heritability?
Definition
The ability of a trait to be passed down from one generation to the next.
Term
True or false. New alleles are made by natural selection.
Definition
FALSE. New alleles are made by genetic mutations.
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