| 释义 |
cladogenesis Biol.|ˌklædəʊˈdʒɛnɪsɪs|
[ad. G. kladogenese (B. Rensch Neuere Probleme der Abstammungslehre (1947) vi. 95), f. Gr. κλάδος branch + γένεσις development.]
A process of adaptive evolution that leads to the development of a greater variety of animals or plants. Hence cladogeˈnetic a.; cladogeˈnetically adv.
1953[see anagenesis]. 1957[see clade n.2]. 1957Nature 7 Sept. 455/2 The resultant of cladogenetic and anagenetic processes in combination. Ibid., Cladogenetically man constitutes only the single family Hominidae. 1959New Statesman 7 Nov. 632/3 Man is the only successful biological species which has remained as a single interbreeding group, not radiating out in ‘cladogenesis’ into thousands of mutually infertile species. |