5.03 evolution
TRANSCRIPT
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Think about this question: How have phones devices changed?
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Think about this question: How have personal musical devices
changed?
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1. Evolution
change in the hereditary features of a species over time - due to mutations in their
DNA
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Horse Evolution
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Whale Evolution
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2. Charles Darwin
Theory of Natural Selection about
evolution
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Darwin’s Observations
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Darwin collected many plants and animals and observed many new species in the Galapagos Islands.
Species – group of organisms that can reproduce successfully
Many different species of finches, but they lived so close?
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3. Species
Group of organisms that can mate with one another to produce fertile
offspring
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4. Adaptation
A characteristic that helps an
organism survive and
reproduce in its environment
Examples: polar bear fur, bird
wings
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NOTE!• Adaptations are caused by
mutations in DNA. An organism cannot CHOOSE to have an adaptation and then pass it on to their children!!
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Darwin’s finches: adaptations: - bird beak shapes are examples of
adaptations
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Questions
1. What is evolution?
2. What is a species?
3. Some insects look just like sticks. How could this be an advantage to the insects?
4. What are some adaptations that a shark has?