Unit 7 AP Biology
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Last updated 3:44 AM on 4/25/23
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16 Terms
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What is evolution?
The change in genetic makeup of a population over time
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What is the purpose of natural selection?
To act as the driving force of evolution
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What is natural selection?
Organisms with traits that are greater suited for survival are selected to reproduce
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What is competition?
Organisms compete with each other for food, habitat, and mates
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What is the importance of genetic variation?
Increases the survivability of a species by increasing the chances an organism will survive and adapt to a changing enviornment
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How is genetic variation obtained?
Sexual reproduction and genetic mutations
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What is fitness?
The ability of an organism to survive and produce fertile offspring
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How is evolutionary fitness measured?
The reproductive success and heritability
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What environment does evolution happen fast?
An unstable environment that is constantly disrupted
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What is selective pressure?
Any biotic or abiotic factors that influences survival
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How does environment influence fitness?
Fitness of an organism changes according to the changing environment (ex. a zebra may be fit in the safari but not fit in the snow)
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