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Warm up # 3

What do you remember about evolution from previous lessons?

01/14/2015Play 4 minute review video about Life 

on Earth

https://www.youtube.com/watch?v=H6IrUUDboZo

Assignment                 Date           Page

27. Observation activity 2   12/89/14

28. Life on Earth                 12/10/14          29. Paper towel Lab 12/16/1430. Natural Selection 1/14/15

Natural Selection

EvolutionEvolution is the modification (change) in the inherited characteristics of organisms over many generations

1. Variation: members of a group of organisms have different genes and traits

Factors that Control Evolution

https://www.youtube.com/watch?v=H6IrUUDboZo

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2. Selection: Survival of the fittest

Factors that Control Evolution

3. Inheritance: genetic traits are passed down from parents to offspring

Factors that Control Evolution

4. Time: Evolution takes time

Factors that Control Evolution

Variation: there are green and brown beetles in the wild

Selection: green beetles are more visible to birds and get eaten

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Inheritance: more brown beetles survive to reproduce and pass on their brown color

Time: if brown beetles continue to survive better in the environment, all the green beetles will die off

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Play Plant Mimic video

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Common misconceptions Evolution is a theory about the origin of life. Individual organisms can evolve during a single lifespan. Natural selection involves organisms trying to adapt. Humans can't negatively impact ecosystems, because species will just evolve what they need to survive. The fittest organisms in a population are those that are strongest, healthiest, fastest, and/or largest. Natural selection produces organisms perfectly suited to their environments.

brain pop: natural selection

Attachments

Gradebook 2012.egp

SMART Notebook

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