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12 Cards in this Set
- Front
- Back
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Evolution |
The process where populations accumulate inherited changes over time. “Change Over Time”! |
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Adaptations |
Characteristics that help an organism survive and reproduce in its environment |
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Fossils |
The solidified remains “once-living” organisms |
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Vestigial Structures: |
Parts of the body which do not have a function but may have had a job in the past. This shows that organisms have changed over time |
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Homologous Structures |
The bones in the front of these animals are similar even though they are used in different ways. This shows that they share a common ancestor. |
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Charles Darwin |
Naturalist who after collage went on aw 5 year journy through the Gallapogos Islands where he developed the theory of evolution |
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Darwins Finches |
On the Gallapogos Islands Darwin found a species of bird called the finch which he noticed that they differed from island to island(different beaks and color) |
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Parts of natural selection |
1-Overproduction 2-Genetic Variation 3-Competition/struggle to survive 4-Successful Reproduction |
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Overproduction
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Living things make many offspring...Not all offspring survive |
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Genetic Variation
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There is genetic variety in populations! No two organisms are identical. Some have traits that are Better suited than others to survive. |
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Competition |
There is limited food,water,and recources. Living things have to compete to survive. |
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Successful Reproduction |
Only some survive to reproduce. The organisms whose traits best fit the enviornment will survive, reproduce and pass those traits on. |
