Automictic parthenogenesis
Definition
A form of parthenogenesis (virgin reproduction) in which an egg cell develops without being fertilized by a sperm cell, but diploidy (the full chromosome count) is spontaneously restored through an internal meiotic or mitotic mechanism, such as the fusion of the egg with its own polar body or nuclear chromosome duplication. This endogenous structural process ensures the complete transmission of maternal genetic material, generating offspring that are genetically partial or total clones of the mother.
Bilingual Equivalents
- Automictic parthenogenesis
- Self-parthenogenesis
Grammatical & Source Details
| Inflection Type | Feminine noun, regular structural variations for singular and plural forms. |
| Formation | Scientific compound derived from the combining prefix 'auto-' and the biological term 'parthenogenesis'. |
| Spelling / Pronunciation | [ˌɔː.toʊ.ˌpɑː.θə.noʊ.ˈdʒen.ə.sɪs] |
| Source | Textbook of Invertebrate Embryology and Cytogenetic Mechanisms |
Contextual Usage Examples
RO: La unele specii de șopârle, această autopartenogeneză reprezintă singura modalitate de supraviețuire în habitate izolate.
EN: In some lizard species, this self-parthenogenesis represents the only way to survive in isolated habitats.
RO: Analiza citologică a relevat că fenomenul de autopartenogeneză a fost declanșat de o fuziune timpurie cu nucleul polar.
EN: The cytological analysis revealed that the self-parthenogenesis phenomenon was triggered by an early fusion with the polar nucleus.
RO: Spre deosebire de alte forme primitive, o autopartenogeneză meiotică păstrează o anumită rată de recombinare genetică.
EN: Unlike other primitive forms, a meiotic self-parthenogenesis maintains a certain rate of genetic recombination.
Idioms & Phrases
Mecanism de autopartenogeneză / Self-parthenogenesis mechanism
RO: Succesiune de diviziuni celulare modificate prin care un organism feminin dublează setul haploid fără aport extern masculin.
EN: A sequence of modified cell divisions through which a female organism doubles the haploid set without external male input.
Autopartenogeneză naturală / Natural automixis
RO: Proces reproductiv stabil, fixat evolutiv la anumite insecte, nematode sau reptile, eliminând necesitatea masculilor.
EN: A stable reproductive process, evolutionarily fixed in certain insects, nematodes, or reptiles, eliminating the need for males.
Ciclul de autopartenogeneză / Autopartenogenesis cycle
RO: Ansamblul fazelor biologice de dezvoltare a unui embrion diploid provenit dintr-un gamet feminin nematurat prin fertilizare.
EN: The total biological phases of development of a diploid embryo derived from a female gamete unfertilized through mating.
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