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Darwin’s Journey Pg. 58 Patterns of Evolution Pg. 59 Add to Table of Contents:
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Patterns of Evolution Pg. 59
Evolution = change over time. Darwin wrote “Descent with Modification” and said newer life forms are modified descendants of older species. Natural Selection – organisms best suited to their environment will reproduce more successfully and survive. = survival of the fittest!
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Patterns of Evolution: 1
Patterns of Evolution: 1. Convergent evolution – different species evolve similar traits-the environment selects the traits ** have different ancestors.
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2. Divergent evolution – descendants of a single ancestor change into new species. (become dissimilar)
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2. Divergent evolution -Adaptive Radiation – organisms undergo divergence until all parts of the environment are filled. Ex. Bird beaks in Galapagos.
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3. Coevolution – two or more species have evolved adaptations due to each other’s influence= evolve together!
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4. Artificial Selection – humans intentionally breeding organisms to obtain desired traits.
Ex. Dogs- DNA from all 654 breeds show they share DNA similarities with wolves in East Asia, showing humans domesticated dogs from wolves, then selectively bred them to get today’s breeds.
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Answer essential question
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Butterflies – example of camouflage
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Butterflies – example of mimicry
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Butterflies – examples of trickery
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Butterflies – examples of don’t eat me! And trickery
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Now you are going to create your own camouflaged butterfly.
Rules: 1. It can not be all 1 color. (at least 2 colors) 2. Has to be placed somewhere in full view around outside edges of the classroom. 3. Can’t be on floor or ceiling.
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