automictic
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automictic parthenogenesis — pairing of one set of chromosomes in egg formation with a copy of itself, a type of virgin birth where no sperm is involved, e.g. in bonnethead shark, Sphyrno tiburo … Dictionary of ichthyology
automictic meiotic parthenogenesis — A normal reduction division occurs, followed by the fusion of the two nuclei so that the diploid number of chromosomes is restored; often the female pronucleus fuses with the second polar body nucleus, or two cleavage nuclei may fuse; only… … Dictionary of invertebrate zoology
automictic parthenogenesis — noun see automixis … Useful english dictionary
Parthenogenesis — (from the Greek παρθένος parthenos , virgin , + γένεσις genesis , creation ) is an asexual form of reproduction found in females where growth and development of embryos or seeds occurs without fertilization by a male. The offspring produced by… … Wikipedia
automixis — n. [Gr. autos, self; mixis, mingling] Obligatory selffertilization; egg and sperm being derived from the same individual, as opposed to amphimixis; automictic parthenogenesis … Dictionary of invertebrate zoology
facultative meiotic parthenogenesis — The diploid chromosomal complement in the reduced oocytes is restored by fusion of the second polar nucleus with the egg pronucleus; see automictic meiotic parthenogenesis … Dictionary of invertebrate zoology
automixis — noun A form of parthenogenesis in which two haploid gametes from the same meiosis combine See Also: automictic … Wiktionary
