natural selection

1
natural selection
2
What is it?

• Charles Darwin (1859)
• HMS Beagle
• Galapagos Islands
• Studied Anatomy
• of Finches

3
What evidence is there?

• In order for natural selection, or any other
  theory of evolution to be accurate, there needs
  to be some physical evidence supporting it.
  Following are some clues scientists have used to
  piece together the history of living things on
  Earth.

4
Fossils

• CuvierExtinction existed
• Shape and Purpose

5
Anatomy

• Homologous Structures
• Same, but
• different
• Analogous Structures
• Same function, but different structure

6
(No Transcript)
7
Anatomy 2

• Vestigial Structures
• No longer needed/used

8
Biochemistry

• Study DNA
• Genetic Technology
• RFLPs
• Gel Electrophoresis

9
Comparative Embryology

• Study Embryos of Different Organisms

10
(No Transcript)
11
Adaptations

• What is it?
• Who displays it?
• Why does it happen?

12
Mimicry

• a superficial resemblance of one organism to
  another or to natural objects among which it
  lives that secures it a selective advantage (as
  protection from predation)

13
Camouflage
14
Resistance

• Mostly bacteria and viruses