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Evolution

Evolution. Vocabulary. Adaptation – a mutation or change in an organism’s DNA that increases its chance for survival Competition – when organisms fight over limited (not enough) resources (food, water, living space) Evolution – a change in an organism over time (hundreds of years)

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Evolution

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  1. Evolution

  2. Vocabulary • Adaptation – a mutation or change in an organism’s DNA that increases its chance for survival • Competition – when organisms fight over limited (not enough) resources (food, water, living space) • Evolution – a change in an organism over time (hundreds of years) • Extinction – when an species no longer exists

  3. Vocabulary • Fossil – an imprint of the remains of an organism in rock • Mutation – a change in an organism’s DNA causing a new trait • Natural Selection – when organisms with the best traits to survive in their environment survive over those that do not have those traits (Survival of the fittest) • Overproduction – when organisms produce more offspring then there are enough resources for

  4. Evolution: • A change in a species over _______________ • Evidence - Fossil Record A. youngest fossils are near the ____________ B. Oldest fossils are near the ____________ Time Top (surface) Bottom (deepest)

  5. Adaptation: • Mutation that _____________ an organism’s chance for survival • Ex. Pepper moths Increases

  6. Competition: Darwin A. Natural Selection 1. Organisms that are best ____________ will survive 2. Affects are seen in fast reproducers ex. Bacteria B. Overproduction 1. A species produces more organisms than can ________ due to limited resources, causing competition C. Competition 1. Organisms fight for _______________ 2. Best adapted survive (“survival of the __________”) Adapted Survive Resources Fittest

  7. Extinction A. all members of a species ________ B. due to not being able to ___________ C. evidence - fossils Die Adapt

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