Evolution: Defining Scientific Theory Misconceptions Natural Selection

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Presentation transcript:

Evolution: Defining Scientific Theory Misconceptions Natural Selection Evidence for Evolution What it is and what it isn’t Jennifer E. Michnowicz

Defining Scientific Facts and Theories Theory

Misconceptions in Evolution 1. Evolution is only a theory. 3. Individuals can evolve. 4. Adaptations are only beneficial. 5. Survival of the fastest and strongestonly. 6. Evolution has never been observed. 7. People came from apes.

Evolution is…

Natural Selection Explains mechanism of evolution “Descent with modification” DNA mutations are one cause of variation within species Environment provides selective pressure on adaptations Those individuals that survive pass on their genes to offspring

Evidences of Evolution The fossil record Comparative anatomy Similarities in early development Comparing amino acid sequences

Comparing amino acid sequences Which primate is most closely related to humans? ______________ Which is least closely related to humans? _____________ Which primate has the most recent common ancestor with humans?

Evolution What it isn’t…… What it is “Just” a theory Well proven scientific theory theory Acquired characteristics Descent with modification Survival of the strongest Survival of the luckiest A mysterious process Observable Only in Biology Permeates all sciences