Do Now: 1.What do you know about evolution? 2.Have you ever heard of Charles Darwin?
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Transcript of Do Now: 1.What do you know about evolution? 2.Have you ever heard of Charles Darwin?
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Do Now:
1.What do you know about
evolution?
2.Have you ever heard of Charles Darwin?
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REVIEW!!!!
Before we look at evolution, lets review some key concepts…
Can you tell me what traits are ? How about DNA? How about mutations?
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Word Definition Picture
1. Traits
Characteristics organisms have due to
their genetics
Example: Brown hair, blue eyes, long
fur, feathers
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Word Definition Picture
2. DNA
Deoxyribonucleic acid,
Molecule in the nucleus of our cells that tell our cells
what to do
You get half your DNA from you mom,
half from you dad
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Word Definition Picture
3. Mutations
Changes in DNA, could be harmful or helpful
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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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Word Definition Picture
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
it is still accepted today
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Darwin’s ObservationsDarwin went on an expedition to the
Galapagos Islands and became the ship’s naturalist. (He studied plants and animals at every island they stopped.)
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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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Word Definition Picture
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. Some insects look just like sticks. How could this be an advantage to the insects?
3. What are some adaptations that a shark has?