evolution: defining scientific theory misconceptions natural selection evidence for evolution ...

Evolution:

Defining Scientific Theory

Misconceptions

Natural Selection

Evidence for Evolution

What it is and what it isn’tJennifer E. Michnowicz 1

Defining Scientific Facts and Theories

Fact

Theory

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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.3

Evolution is…

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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

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Evidences of Evolution

The fossil record

Comparative anatomy

Similarities in early development

Comparing amino acid sequences

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Comparing amino acid sequences

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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

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