Related listening from Buy Why? A VPR podcast for curious kids.įollow this up with The 12 Days of Evolution, a series dedicated to explaining evolution and natural selection, plus more videos about the human body. As the function of the trait is no longer beneficial for survival, the likelihood that future offspring will inherit the “normal” form of it decreases. With this expansion, some traits were left to the wayside. More advantageous structures were selected, while others were not. Evolving with time, natural selection played a huge role. As time progressed, the ancient common ancestor organisms did as well. Every anatomical structure or behavior response has origins in which they were, at one time, useful. Vestigial organs-organs that serve no useful function in an organism. Through examination of these various traits, it is clear that evolution had a hard role in the development of organisms. Homologous Structures-structures that have different mature forms in different. The existence of vestigial traits can be attributed to changes in the environment and behavior patterns of the organism in question. Therefore, vestigial structures can be considered evidence for evolution, the process by which beneficial heritable traits arise in populations over an extended period of time. Vestigial structures are often homologous to structures that are functioning normally in other species. the social structure of your world in an automatically rendered map. Watch this Vox video to help identify the evidence of evolution in yours. Feel free to download the map and print it for personal use at your gaming table.
Signs of our evolutionary history can be found in the form of vestigial structures on the human body.
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