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Changes Over Time Class Notes
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Evolution Gradual Changes Over Time Caused By a FAVORABLE Mutation Adapt or Die-Out
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Adaptation Physical/Structural Thicker Fur Behavioral Protect offspring Functional Large bunny ears to cool off
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Natural Selection Survival & Reproduction
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Natural Selection Best fit organism will survive the environment and pass on their traits to offspring. New species formed when can no longer produce fertile offspring with ancestor. Evolutionnatural selectionadaptationsEvolution occurs by means of natural selection through adaptations over time.
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Survival VS.
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Attracting Mates Hey babe! Check ME out!
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Case Study : Peppered Moth ! Imagine you are a bird. Which Moth (a or b) is an easy dinner? Why?? A B
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Case Study : Peppered Moth Black/White Moths White More Common Industrial Pollution Black Soot Everywhere Few Mutated Black Moths Don’t Get Eaten Survive and…..reproduce!
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You Try It! How Many Peppered Moths Are There? How Many Black Moths Are There?
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Did You Get them all? How Many Peppered Moths Are There? 6 How Many Black Moths Are There? 3 * * * ** * * * *
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EVIDENCE for evolution ! 1. Fossils! –Remains or imprints of long dead organism –Deeper in Earth = OLDER –Closer to Surface = YOUNGER 2. Homologous (similar) bone structures to ancestors. 3. Similar DNA
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You Try It! Butterfly Activity Time.
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Butterfly Activity Rules Must be plainly visible from where you sit Do not put below knees or above fingertips Your butterfly cannot leave the room! Place on a wall/attached surface South wall/whiteboard to Skelator off limits! If your butterfly is ‘eaten in round 1’ you die.
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