orthogeneticadj.

1899 H. Gadow in Proc. Cambr. Philos. Soc. 10 35 (heading) Orthogenetic variation in the shells of Chelonia.

1899 H. Gadow in Proc. Cambr. Philos. Soc. 10 37 Since these variations all lie in the direct line of descent..I call this kind of atavistic variation orthogenetic.

1927 J. B. S. Haldane & J. S. Huxley Animal Biol. xi. 253 The orthogenetic series can be perfectly well explained by natural selection.

1965 B. E. Freeman tr. A. Vandel Biospeleol. xiii. 198 Biospeleologists..are more interested in orthogenetic evolution which proceeds in a parallel manner, in different phyletic lines.

1990 E. Harth Dawn of Millennium (1991) iii. 36 Is brain evolution still continuing among humans, and should we be concerned about an orthogenetic disaster?

2001 BioScience (Nexis) 51 4 Mysteriously, Romero interprets my essay as promulgating some sort of Lamarckian, orthogenetic vision of evolution.

1911 J. Ward Realm of Ends 475 If what does exist in time is imperfect those who have wrought it must..remain imperfect, it will be rejoined... Our development..is not strictly ‘orthogenetic’; it does not take the ideally straightest path... And as with God so here perfection will not imply inaction.

1939 E. G. Williamson How to counsel Students i. i. 9 The evolution of educational philosophy and practice with regard to personnel work has not been orthogenetic. Beginning with a theory and practice based on personal relations between teachers and students, the nineteenth century witnessed an about-face in which personalism was supplanted by intellectualism.

1955 Far Eastern Q. 15 23 Using these ideas [for the study of civilizations], as well as another distinction of Redfield's between ‘orthogenetic’ and ‘heterogenetic’ cities, I had tried to formulate several broad hypotheses.

1963 H. Werner & B. Kaplan Organismic-developmental Approach Lang. ii. x. 132 In the progressive articulation of speech units..out of a matrix of bodily movements and vocal-intonational patterns..we shall see the manifestation of the orthogenetic principle.

2000 World Archaeol. 32 107 Orthogenetic cities may be associated with manufacturing activities, but these are not centralized in the monumental area... Heterogenetic cities..produce few monuments.