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An evolutionary process that involves the splitting off or branching of new taxa from an ancestral form.

[Greek klados, branch + -genesis.]

clad′o·ge·net′ic (-jə-nĕt′ĭk) adj.
clad′o·ge·net′i·cal·ly adv.


(Biology) adaptive evolution leading to a greater variety of species
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References in periodicals archive ?
Biogeography of Triassic tetrapods: evidence for provincialism and driven sympatric cladogenesis in the early evolution of modern tetrapod lineages.
Hypotheses: We anticipate multiple origins of lichenicolous fungi, partial parallel cladogenesis, and Gondwanan origin for the Cladoniaceae, but current patterns of distribution are probably partly explained by recent dispersal.
Maximum likelihood inference of geographic range evolution by dispersal, local extinction, and cladogenesis.
Sequential cladogenesis of Pomacentrus moluccensis (Bleeker, 1853) supports the peripheral origin of marine biodiversity in the Indo-Australian Archipelago.
There is no alternative but to assemble a "groundplan" on the basis of known taxa, but the procedure contains hidden assumptions, especially that no extant taxon is significantly older than the period at which cladogenesis produced the fundamental dichotomies leading to divergence in the assemblage of taxa being considered.
To better understand the distinct evolutionary histories of humans and chimps, we must begin with a discussion of two evolutionary patterns: anagenesis and cladogenesis.
Additionally, that RFLP analysis showed a pattern identical with other Brazilian strains, similar to VACV-WR and different from CPXV, suggests that a cladogenesis event may have occurred.
irresolution due to a lack of data, rather than 'hard' polytomies which is an assertion of simultaneous cladogenesis (Coddington & Scharff 1996).
Casting species as individuals does not privilege cladogenesis.
Within the Zingiberales, such a study has been conducted for the family Costaceae (Specht, 2005) where dense species-level sampling across the family includes molecular data for each taxon so that branch lengths could be estimated and a molecular clock approach used to develop age estimates for each of the major bifurcations indicating diversification events in the form of cladogenesis or speciation.