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13 Cards in this Set
- Front
- Back
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How old is the earth? |
4.5 or 4.6 Billion years old |
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List time periods in order |
Precambrian, Paleozoic, Mesozoic, Cenozoic |
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Precambrian |
From 4.6 billion years to 550 million years No O_2 Evolution of multicellularity Eukaryotic life |
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Paleozoic |
550 Million years - 250 Million years Cambrian Explosion |
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Mesozoic |
250 Million Years - 65 Million Years Dinosaurs Angiosperm - Plants and Animals First Mammal |
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Cenozoic |
65 Million years - to Current Age of fish (or mammals) |
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Evolution |
The change in alleles in a population over time |
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Fitness |
Reproductive Success |
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Artifical Selection |
Selection done by humans |
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What causes variation in the Gene |
Only caused by Mutation |
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Migration |
The movement of a species to a new area |
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Genetic drift |
Change in a population due to an external source |
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Mate Choice |
Choosing a mate that has the highest fitness |
