Evidence for Evolution (pg 4)
Evidence for Evolution (pg 4)
1. Fossil record: Fossils show evolutionary changes and intermediate forms
2. Comparative Anatomy: Species that are closely related share homologous structures
2. Comparative Anatomy: Species that are closely related share homologous structures
• Example: The forelimbs of mammals all share the same basic bone structure
2. Comparative Anatomy: Species that are closely related share homologous structures
• Example: The forelimbs of mammals all share the same basic bone structure
2. Comparative Anatomy: Species that are closely related share homologous structures
• Example: The forelimbs of mammals all share the same basic bone structure
Worksheet
3. Vestigial structures = body structures that have lost their primary function
3. Vestigial structures = body structures that have lost their primary function
Example: Hind limbs in whales and snakes
3. Vestigial structures = body structures that have lost their primary function
Example: Hind limbs in whales and snakesHuman Examples: Appendix, Tailbone, Goose
bumps
Diagram (pg 5)
4. Comparative Embryology: In early stages, all animal embryos look alike, suggesting common ancestry
4. Comparative Embryology: In early stages, all animal embryos look alike, suggesting common ancestryExample: Young human embryos have gill slits and a tail
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