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Chapter 15 Section 3

Chapter 15 Section 3. Evidence of Evolution. found in the fossil record the geographical distribution of living species homologous structures of living organisms similarities in early development or embryology. Natural Selection. Acts directly on the genes (test question)

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Chapter 15 Section 3

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  1. Chapter 15Section 3

  2. Evidence of Evolution • found in the fossil record • the geographical distribution of living species • homologous structures of living organisms • similarities in early development or embryology.

  3. Natural Selection • Acts directly on the genes (test question) • The struggle for existence means that members of each species compete regularly to obtain food, living space, and other necessities of life.

  4. Fossils include(test question) • Eggs • Footprints • Body parts

  5. Most fossils form in sedimentary rocktest question) • (

  6. vestigial organs(test question) • The organs of many animals are so reduced in size that they are just vestiges, or traces, of homologous organs in other species • vestigial organs may resemble miniature legs, tails, or other structures.

  7. Similarities in Embryology

  8. Homologous body structures

  9. Assignment Page 389 2,3,5,6,9, 21,22,23,24

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