Evolution
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is evolution? | Scientific theory explains how living things descended from earlier organisms
* change over time
* takes million of years
*helps to understand “life on earth”
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| What evidence supports evolution? | Fossils
DNA similar protein
Similar body structures
Early embryonic development
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| What is an analogous structure? | a structure in an organism that serves the same function in different species but they evolved independently
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| What is an homologous? | Characteristics that are shared by related species because they were from a common ancestor
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| What is a naturalist? | a person that observes and studies natural world
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| What are the four parts of Darwin's theory? | fossils
diversity
Galapagos Organisms
Darwin's hypothesis
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| What is adaptation? | a trait that increases an organisms ability to survive and reproduce
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| What is artificial selection? | only an organism with a desired trait is bred- so trait will be passed on
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| What is natural selection? | process of adaptations of organism make them better suited for their environment and therefore have greater survival and ability to reproduce
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| What factors affect natural selection? | Overproduction
Competition
Selection
Environmental change
Genes and natural Selection
Variation
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| What is overproduction? | Too many produced not enough food, water, and space available to survive
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| What is variation? | differences within a species
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| What is competition? | competition for food, living space, etc usually indirectly
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| What is selection? | better adapted to environment-> better survival -> pass traits onto offspring
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| What is environmental change? | Change in environment can change in ability survive
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| What is genes and natural selection? | without variation all species have some traits/ chance of survival
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| Where does variation come from? | Change in gene/ shuffling of eggs and sperm
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| What did Darwin propose about natural selection? | overlong time, natural selection can lead to change- helpful variations increase, unfavorable may disappear
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| How do species go extinct? |
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Created by:
Adelyn20
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