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Unveiling Evolution: The Five Key Evidences

Explore the role of natural selection in the theory of evolution through the Fossil Record, Anatomical Evidence, Comparative Embryology, Comparative Biochemistry, and Geographical Distribution. Discover how fossils, anatomical traits, embryonic development, DNA similarities, and geographical patterns support the evolutionary process. Engage with examples like vestigial structures and homologous features to grasp how species evolve over time. Uncover the interconnectedness of living organisms by examining their shared evolutionary history and the impact of environmental factors on their adaptation. Delve into the intriguing world of evolution and witness the interconnectedness of all life forms on Earth.

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Unveiling Evolution: The Five Key Evidences

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  1. The Five Evidences of Evolution SB5: Students will evaluate the role of natural selection in the development of the theory of evolution.

  2. Support for Evolution • 1 ) The fossil record • Fossils provide a record of species that lived long ago. • Fossils show that ancient species share similarities with species that now live on Earth.

  3. Evidence of Evolution • 2) Anatomical Evidence • A) Derived traits are newly evolved features, such as feathers, that do not appear in the fossils of common ancestors. • B) Ancestral traits are more primitive features, such as teeth and tails, that do appear in ancestral forms. • C) Homologous structures are anatomically similar structures inherited from a common ancestor.

  4. D) Analogous structures can be used for the same purpose and can be superficially similar in construction, but are notinherited from a common ancestor.

  5. E) Vestigial Structures • Structures that are the reduced forms of functional structures in other organisms • Evolutionary theorypredicts that features of ancestors that no longer have a function for that species will become smaller over time until they are lost.

  6. Evidence of Evolution 3) Comparative Embryology • Vertebrate embryos exhibit similar structures during the early phases of development.

  7. Evidence of Evolution 4) Comparative Biochemistry • Organisms have similarities in DNA that scientists use to classify them.

  8. 5) Geographical Distribution • The distribution of plants and animals that Darwin saw during his South American travels first suggested evolution to Darwin. • He noticed that animals and plants that were on the same islands had evolved similar traits but they still were more similar to organisms from their native country/island. • Picture of a English rabbit and Mara

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