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Explore the evidence of evolution through homologous, analogous, and vestigial structures. Learn how similar features share a common ancestry, while analogous features have different origins. Discover vestigial structures, once useful but now obsolete. Delve into embryological similarities, macromolecules, patterns of evolution like coevolution, convergent evolution, and divergent evolution. Unravel the interconnectedness of species' development and adaptation in the evolutionary process.
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15-3 Evolution in Process More Evidence of Evolution
Homologous, Analogous and Vestigial Structures • Homologous features- similar features that originated in a shared ancestor.
Evidence of evolution- • Analogous features- in evolution, structures in more than one organism that have similar appearance and function but different embryological origin an lack of a common ancestor.
Vestigial structures- • Were useful to an ancestor but have no real use to the modern organism. Ex. Appendix, tail bone in humans.
More similarities of evolution- • Embryology-many embryos of different vertebrates and other organisms look similar. • Similar macromolecules- RNA, DNA and proteins like hemoglobin.(Chemistry)
Patterns of Evolution: • Coevolution- change of two or more species in association with each other. • Convergent evolution- organisms with different ancestors develop similar features. Ex. Shark, dolphin • Divergent evolution- organism with a common ancestor evolve differently. Ex. Dogs- german shepard and a poodle.