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Theory : Evolution by natural selection produced the diversity of organisms we observe today.

Theory : Evolution by natural selection produced the diversity of organisms we observe today. Prediction : Similarities must exist between species that originated from the same ancestor. 4 pieces of evidence for evolution show ways similarities are observed….

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Theory : Evolution by natural selection produced the diversity of organisms we observe today.

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  1. Theory: Evolution by natural selection produced the diversity of organisms we observe today. Prediction: Similarities must exist between species that originated from the same ancestor.

  2. 4 pieces of evidence for evolution show ways similarities are observed…

  3. 1. Homologous structures- Similar anatomical features that originated in a shared ancestor. • (NOT analogous structures- features that have identical functions but different internal anatomy and different development in the embryo)

  4. 2. Vestigial structures- structuresthat are useless to an organism but are similar to functional structures of related organisms or ancestors

  5. 3. Embryology- studying the early stages of development of an organism (inside the womb or inside the egg)

  6. 4. Macromolecules- comparing DNA and protein sequences

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