(n.) A structure, part, or organ developed independently, that is, not derived from a similar structure, part, or organ, in a pre existing form.
Example Sentences:
(1) Using deficiencies and duplications of the heterochromatin, both Rex and one Su(Rex) were shown to behave as neomorphs.
(2) The anatomical investigation of morphogenesis proved neomorph differentiation instead of somatic embryos, and leaf formation instead of shoot development.
(3) Integral to the origin of the eutherian style of embryogenesis was the evolution during Cretaceous time of neomorphic, extraembryonic tissues (i.e., trophoblast) having physiological properties that allowed the unique combination of intimate apposition of fetal and maternal tissues and circulatory systems, along with sustained, active morphogenesis.
(4) Dominant gain of function alleles at the Costal-1 locus are also described and data are presented that argue that these are neomorphic and act in trans to impair functioning of costal-2.
(5) Evidence is presented that these dominant homoeotic genes are neomorphic in nature.
(6) We propose that the interaction between pn and awd is due to a neomorphic mutation that enhances the ability of AwdK-pn nucleoside diphosphate kinase to induce a regulatory GTPase into a GTP-bound 'on' state, whereas Pn modulates the activity of this GTPase either by switching it to a GDP-bound 'off' state or by interfering with its effector function.
(7) Many zeste alleles, including several producing neomorphic phenotypes, are not associated with detectable rearrangements of DNA.
(8) While normal embryos were induced in 0-3.1% of the explants, neomorphs developed at a much higher rate i.e.
(9) Contrary to Francis and Davies's assumption according to which the impulse-conducting system of the Homoiothermal Vertebrates is a neomorphic structure, we have been able to identify in the heart of a Poikilothermal (Protopterus) impulse-conducting cells which possess distinctive histological characters.
(10) These and other properties imply that the suppressors, like suppressible Om mutants, are neomorphic due to insertion of the tom element into a hypothetical sequence they share with other members of a set of genes involved in development of the eye.
(11) If so, then the 'lamina ascendens', that portion of the alisphenoid of mammals which lies between maxillary and mandibular nerves, cannot be a true processus ascendens but must be neomorphic.
(12) The neomorphic mutation zv77h is correlated with a 300-bp deletion of sequences determining the untranslated 5' leader of the zeste messenger, but may also remove the initiating ATG codon, resulting in a zeste protein with an altered N terminus.
Pseudomorph
Definition:
(n.) An irregular or deceptive form.
(n.) A pseudomorphous crystal, as a crystal consisting of quartz, but having the cubic form of fluor spar, the fluor crystal having been changed to quartz by a process of substitution.
Example Sentences:
(1) SEM examination revealed structures similar to human stones such as bipyramidal weddellite, pseudomorphs from whewellite to weddellite, apatite deposits in cystine stones and characteristic mono-ammonium-urate needles.
(2) Pseudomorphous foliated texture and cross-cutting relationships indicate replacement of talc by sepiolite.
(3) Mature ependymal cells were either: columnar, pseudocolumnar, cuboidal, squamous, or pseudomorphic; had cilia and villi on only one surface of the cell and shared tight junctions when contiguous.
(4) The radiographic findings of the patients with poorer prognosis tended to show three patterns of tumor shadows: more than 5 cm in diameter, dense with spicular radiation, ill-marginated, faint and pseudomorphic with pleural indentation.