Evidence for Evolution

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Evidence for Evolution

• Fossils
• Comparative Anatomy
• Developmental Biology
• Molecular Biology

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Descent with Modification

• What is the evidence that the different life
  forms as seen in the fossil record and existing
  today are related?
• Some of the evidence comes from Comparative
  Anatomy
• Comparing the similarities and differences in the
  anatomy of different species.

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Organisms with a suite of similar features tend
to be related by descent
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A Cat is a Cat
Felidae
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Analogous Structures
The Evolution of Wings
Just because organisms look similar, it doesnt
mean they are related or share the same
evolutionary heritage.
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Comparative Anatomy and Morphology
Homologous structures
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Fig. 17. 11
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Human and gorilla heads
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Anthropoids (suborder Anthropoidea)
Suborder Tarsiiformes
Suborder Prosimii
Hominoids
Hylobatidae
Pongidae
Hominidae
New World monkeys
Old World monkeys
Lemurs
Tarsiers
Gibbons
Orangutans
Gorillas
Chimpanzees
Humans
Common hominoid ancestor
Common hominoid ancestor
Common anthropoid ancestor
Common primate ancestor
Fig. 21.02