epigeneticadj.

1830 R. Knox tr. P. A. Béclard Elements Gen. Anat. 372 Of anatomists and pathologists, some..consider the accidental tissues as the result of transformations that have been undergone by the natural tissues... Others..regard them as new or epigenetic productions [Fr. des productions nouvelles ou épigénétiques].

1883 W. Arthur On Difference between Physical & Moral Law 160 Epigenetic progress from germ to organ.

1887 Mind Oct. 629 He..contends for an ‘epigenetic’ as distinguished from an evolutionary view of the origins of civilisation.

1938 Amer. Jrnl. Clin. Pathol. 8 112 If development is anything, it is certainly epigenetic; which means that as one part is produced, it influences and exercises effects on the oncoming parts as they are developed.

2014 J. Maienschein Embryos under Microscope ii. 28 An individual begins as a mixture of fluids, according to many epigenetic interpretations such as Aristotle's.

1958 Proc. National Acad. Sci. U.S.A. 44 713 The existence of phenotypic differences between cells of the same genotype merely indicates that the expressed specificities are not determined entirely by the DNA present in the cell—that other devices, epigenetic systems, regulate the expression of the genetically determined potentialities.

1970 Amer. Scientist May 307/1 Various genetic and epigenetic mechanisms, nevertheless, exist which could, in principle at least, account for the heritable cellular change that leads to the continued abnormal and autonomous proliferation of a tumor cell.

2015 N.Y. Times Mag. 12 July 52/1 How an individual's genes respond to that environment—how they are expressed—creates what scientists call an epigenetic profile.

2015 Q. Rev. Biophysics 48 448/2 The birth of mirror-image animals is not due to the epigenetic consequence but to the chiral positioning of blastomeres at the eight-cell stage.

1844 B. M. Keilhau in Edinb. New Philos. Jrnl. 37 168 These rocks also became what they now are, by having been, so to speak, twice formed... If this epigenetic mode of formation, as it may be shortly termed, were even less intelligible than it really is.., yet we ought to find no reason in this for casting away the result that has been obtained.

1917 W. H. Emmons Enrichm. of Ore Deposits (U.S. Dept. Interior Geol. Surv.) Bull. No. 625. 141 This process [sc. metasomatism] goes on under widely varying conditions and operates to form epigenetic ores of every class.

1965 G. J. Williams Econ. Geol. N.Z. xiii. 207/2 Autoradiographs show the radioactivity to be confined to the carbonaceous material which is clearly epigenetic in origin.

2015 D. Rickard Pyrite v. 147 They clearly display epigenetic characteristics since the veins are cross-cutting the earlier host rocks.

1888 W. J. McGee in 7th Ann. Rep. U.S. Geol. Surv. 1885–6 560 Still more recently Richthofen, neglecting antecedent drainage and designating the superimposed class of Powell epigenetic, has formulated a classification of the remaining types of continental depressions.

1937 S. W. Wooldridge & R. S. Morgan Physical Basis Geogr. xxii. 401 ‘Epigenetic gorges’ through ridges, due to superimposition of drainage.

2015 M. Veress & Z. Unger in D. Lóczy Landscapes & Landforms Hungary vii. 57/2 The bottom of the epigenetic valley is covered by the debris transported from the valley generated in the basalt terrain.