Chapter 4 Section 2 - Evolution. AIM and HW AIM: How does evolution occur by natural selection? HW: 1) Complete Peppered Moths questions 2) QUIZ on FRIDAY.

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Presentation transcript:

Chapter 4 Section 2 - Evolution

AIM and HW AIM: How does evolution occur by natural selection? HW: 1) Complete Peppered Moths questions 2) QUIZ on FRIDAY 3) TEST on THURSDAY

DO NOW In your EcoLog answer: –What do you think…what does natural selection mean?

AIM and HW AIM: How do organisms become so well suited to their environment? HW: 1) Finish article questions 2) TEST on THURSDAY – start studying!

DO NOW In your EcoLog answer the following questions: –Who is Charles Darwin? –How is he related to evolution?

Darwin and Evolution Darwin –natural selection the unequal survival and reproduction that results from the presence or absence of particular traits –evolution a change in the genetic characteristics of a population from one generation to the next

Evolution by Natural Selection 1) Overproduction = Organisms produce more offspring than can survive

Evolution by Natural Selection 2) The environment is hostile and contains limited resources

Evolution by Natural Selection 3) Organisms differ in the traits they have

Evolution by Natural Selection 4) Some inherited traits provide organisms with an advantage 5) Each generation contains proportionately more organisms with advantageous traits

AIM and HW AIM: Why does evolution matter now? HW: 1) TEST TOMORROW (Chapter 4)

DO NOW In your EcoLog, discuss the events of the video

AIM and HW AIM: How does natural selection impact future generations? HW: 1) TEST TOMORROW (Chapter 4 – Sections 1 & 2)

In your EcoLog, compare/contrast survival of the fittest and natural selection DO NOW

Evolution by Artificial Selection Artificial Selection –the selective breeding of organisms by humans for specific characteristics –EX: fruits, grain, and vegetables we eat dog breeds

Evolution by Resistance

Pesticide Resistance –How do pests develop a resistance to pesticides?

CLOSURE Explain what an adaptation is, and provide three examples Explain the process of evolution by natural selection Describe one way in which artificial selection can benefit humans Explain how a population of insects could become resistant to a pesticide

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