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Chapter 23
Broad Patterns of Evolution
Quiz
Learning Objectives:
1.A.1: Natural selection is a major mechanism of evolution.
1.B.1: Organisms share many conserved core processes and features that evolved and are widely distributed among organisms today.
1.C.1: Speciation and extinction have occurred throughout the Earth's history.
1.C.3: Populations of organisms continue to evolve.
1.D.1: There are several hypotheses about the natural origin of life on Earth, each with supporting scientific evidence.
1.D.2: Scientific evidence from many different disciplines supports models of the origin of life.
3.C.1: Changes in genotype can result in changes in phenotype.
Watch video.
Take notes.
Scientific Skills Exercise:
Estimating quantitative data from a graph and developing hypotheses
Do ecological factors affect evolutionary rates?
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Textbook page 459--Complete in Notes.
The Guardian:
Earth's sixth mass extinction event under way
TED: Sixth Extinction
Respond on Notes 3B: Do you believe we are currently in a 6th extinction? Justify.
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Identify possible mechanisms of a 6th extinction.
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