Evolution objectives

Students should be able to…1. Describe what the Theory of Evolution states.2. Name the person who developed this theory and describe how he

developed it.3. Define the following and give an example of each.

SpeciesPopulationNatural selection

4. Describe how fossils and strata provide evidence for the theory of evolution. 5. Determine the age of rocks and fossils using radioactive dating.6. Describe an example of homologous structures.7. Determine allele frequencies.8. Describe what the Hardy-Weinberg (H-W) principle /law/ theory states and be sure to list the 5 H-W conditions.

Who am I?

Tiktalik

Tiktalik leg bones

Evidence of Evolution The Fossil RecordThe Fossil Record Geographic Geographic

Distribution of Distribution of Living Things-Living Things-similar similar environments have environments have similar types of similar types of organismsorganisms

Homologous Body Homologous Body StructuresStructures

Similarities in Early Similarities in Early DevelopmentDevelopment

Theory of Evolution

Change Change accumulates in a accumulates in a populationpopulation over over time.time.

Theory of Evolution HypothesisIFIF

populations populations accumulate accumulate change over change over timetime

THEN THEN species that species that look similar look similar should have should have close common close common ancestorsancestors

Homologous Structures

- Look similar, but…- Look similar, but…-the structures have different mature forms in the structures have different mature forms in different organisms, different organisms, -develop from the same embryonic tissuedevelop from the same embryonic tissue

- do not necessarily have the same function- do not necessarily have the same function

Evidence for EvolutionIf…then organisms will have… Vestigial organsVestigial organs-organs that serve -organs that serve

no useful function in an organism no useful function in an organism OR does not have the original OR does not have the original function.function.

e.g. appendix, miniature legs, etce.g. appendix, miniature legs, etc

Meets expectationsMeets expectations Complete comparative anatomy worksheets.Complete comparative anatomy worksheets.

Assignment

Exceeds expectationsExceeds expectations Choose non-human bone from class collection and Choose non-human bone from class collection and

identify it.identify it. Describe differences and similarities between the bone Describe differences and similarities between the bone

and the human equivalent.and the human equivalent. Take a picture of the bone and label each part.Take a picture of the bone and label each part. Describe and show 3 vestigial organs from non-human Describe and show 3 vestigial organs from non-human

vertebrates. You cannot use any the worksheet or class vertebrates. You cannot use any the worksheet or class examples that I mentioned.examples that I mentioned.

Honors Assignment Meets ExpectationsMeets Expectations

Choose non-human bone from class collection and Choose non-human bone from class collection and identify it.identify it.

Describe differences and similarities between the bone Describe differences and similarities between the bone and the human equivalent.and the human equivalent.

Take a picture of the bone and label each part.Take a picture of the bone and label each part. Describe and show 3 vestigial organs from non-human Describe and show 3 vestigial organs from non-human

vertebrates. You cannot use any class examples.vertebrates. You cannot use any class examples. Exceeds ExpectationsExceeds Expectations

Choose 2 non-human bones, identify and compare and Choose 2 non-human bones, identify and compare and contrast. Label a pic of them.contrast. Label a pic of them.

Describe and show 5 vestigial organsDescribe and show 5 vestigial organs How is an analogous structure different than a How is an analogous structure different than a

homologous structure?homologous structure?