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单词	cladogenesis
释义	cladogenesis noun clad·​o·​gen·​e·​sis ˌkla-də-ˈje-nə-səs  : evolutionary change characterized by treelike branching of taxa compare anagenesis cladogenetic ˌkla-dō-jə-ˈne-tik  adjective cladogenetically ˌkla-dō-jə-ˈne-ti-k(ə-)lē  adverb Example Sentences Recent Examples on the Web Whereas, in cladogenesis, a lineage splits into two or more separate lines. Julia Musto, Fox News, 5 Mar. 2022 But the case for cladogenesis over anagenesis hinges entirely on that 3.9-million-year-old forehead bone from Belohdelie belonging to A. afarensis—no other A. afarensis remains recovered thus far are that old. Kate Wong, Scientific American, 7 Dec. 2019 This branching mode of evolution, known as cladogenesis, can occur when populations of a species become isolated from one another and are thus able to evolve in different directions. Kate Wong, Scientific American, 7 Dec. 2019 Since these modern features were already present in the older species, the most likely scenario is that Lucy’s species formed by evolutionary divergence from A. anamensis – a process known as cladogenesis. Hester Hanegraef, Quartz Africa, 7 Sep. 2019 Further evidence for cladogenesis comes from a 3.9m years old frontal bone (part of the forehead) from Ethiopia, discovered in 1981. Hester Hanegraef, Quartz Africa, 7 Sep. 2019 Word History First Known Use 1953, in the meaning defined above
随便看	index of refraction index patient index patients index percent index plane index plate index rerum index species index table index verborum index-linked indexable indexation indexations indexed indexer indexers indexes indexical indexically indexicals indexing indexing head indexings indexless

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