Automixis
Definition
A modified form of sexual reproduction or self-fertilization characterized by the fusion of two haploid nuclei originating from the same mother cell or the same individual, without the intervention of any external gamete. In genetics and mycology, this biological process ensures the perpetuation of the species under extreme ecological isolation, allowing the restoration of the zygote's diploid state from a single lineage, though it reduces the genetic variability of offspring.
Bilingual Equivalents
- Automixis
- Automictic reproduction
Grammatical & Source Details
| Inflection Type | Feminine noun, operating strictly within a singular conceptual paradigm. |
| Formation | Neologistic structure combining the Greek elements 'auto-' (self) and the suffix '-mixis' (intercourse/mingling). |
| Spelling / Pronunciation | [a.u.to.mik.ˈsi.e] |
| Source | Lexicon of Cytology, Evolutionary Genetics, and Mycological Systematics |
Contextual Usage Examples
RO: La anumite specii de ferigi, reproducerea prin automixie devine regula principală în absența apei necesare fertilizării încrucișate.
EN: In certain fern species, reproduction through automixis becomes the primary rule in the absence of water required for cross-fertilization.
RO: Analiza microscopică a arătat cum procesul de automixie restabilește numărul normal de cromozomi în sporii maturi.
EN: The microscopic analysis showed how the automixis process restores the normal chromosome count in mature spores.
RO: Biologul a explicat că această automixie permanentă limitează capacitatea de adaptare a plantelor la schimbările climatice.
EN: The biologist explained that this permanent automixis limits the plants' capacity to adapt to climate changes.
Idioms & Phrases
Automixie facultativă / Facultative automixis
RO: Abilitate a unui organism de a apela la autofecundare nucleară doar atunci când partenerii sexuali nu sunt disponibili în mediu.
EN: The ability of an organism to resort to nuclear self-fertilization only when sexual partners are unavailable in the environment.
Proces de automixie / Automictic process / automixis loop
RO: Succesiunea de diviziuni meiotice urmate de fuziunea produșilor haploizi interni pentru generarea unui embrion diploid.
EN: The succession of meiotic divisions followed by the fusion of internal haploid products to generate a diploid embryo.
Mecanism de automixie / Automixis mechanism
RO: Configurație citologică specifică ce împiedică degradarea polilor nucleari, forțându-i să se unească în interiorul aceleiași membrane.
EN: A specific cytological configuration that prevents the degradation of nuclear poles, forcing them to unite inside the same membrane.
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