Results 21 to 30 of about 10,705 (212)

On human parthenogenesis

open access: yesMedical Hypotheses, 2017
Spontaneous parthenogenetic and androgenetic events occur in humans, but they result in tumours: the ovarian teratoma and the hydatidiform mole, respectively. However, the observation of fetiform (ovarian) teratomas, the serependious identification of several chimeric human parthenotes and androgenotes in the last two decades, along with the creation ...
Gabriel, Jose de Carli   +1 more
openaire   +2 more sources

Parthenogenesis in diploid Erigeron

open access: yes, 2022
1) Percentage ovules exhibiting parthenogenesis in embryos, endosperm, or both2) Comparison of percentage ovules exhibiting parthenogenesis for Noyes (AJB, 2022) and Noyes and Wagner (2014).
Richard Noyes (12127368)
core   +1 more source

Parthenogenesis is self-destructive for scaled reptiles [PDF]

open access: yes, 2021
Parthenogenesis is rare in nature. With 39 described true parthenogens, scaled reptiles (Squamata) are the only vertebrates that evolved this reproductive strategy.
Moreira, Matthew Owen   +5 more
core   +1 more source

Facultative parthenogenesis in the burrowing mayfly, Ephoron eophilum (Ephemeroptera: Polymitarcyidae) with an extremely short alate stage

open access: yesEuropean Journal of Entomology, 2015
Facultative parthenogenesis is important for mayflies with short alate stages because females are able to reproduce without mating. We studied facultative parthenogenesis in Ephoron eophilum, a mayfly with an extremely short alate stage.
Kazuki SEKINÉ, Koji TOJO, Yeon Jae BAE
doaj   +1 more source

Diversity in the reproductive modes of European Daphnia pulicaria deviates from the geographical parthenogenesis. [PDF]

open access: yesPLoS ONE, 2011
Multiple transitions to obligate parthenogenesis have occurred in the Daphnia pulex complex in North America. These newly formed asexual lineages are differentially distributed being found predominantly at high latitudes.
France Dufresne   +4 more
doaj   +1 more source

Facultative parthenogenesis validated by DNA analyses in the green anaconda (Eunectes murinus). [PDF]

open access: yesPLoS ONE, 2017
In reptiles, the mode of reproduction is typically sexual. However, facultative parthenogenesis occurs in some Squamata, such as Komodo dragon (Varanus komodoensis) and Burmese python (Python bivittatus).
Hiroki Shibata   +4 more
doaj   +1 more source

Range of Occurrence of Bisexual and Parthenogenetic Populations of Labidostomma luteum (Acari: Prostigmata) in Europe

open access: yesDiversity, 2022
The current article describes an interesting case of geographic parthenogenesis among European mites from the Labidostommidae family (Acari: Prostigmata).
Jerzy Błoszyk   +3 more
doaj   +1 more source

Parthenogenesis and the Evolution of Anisogamy [PDF]

open access: yesCells, 2021
Abstract Recently, it was pointed out [1] that classic models for the evolution of anisogamy do not take into account the possibility of parthenogenetic reproduction, even though sex is facultative in many relevant taxa (e.g. algae) that harbour both anisogamous and isogamous species.
Constable, George W A, Kokko, Hanna
openaire   +6 more sources

Meiosis genes in Daphnia pulex and the role of parthenogenesis in genome evolution

open access: yesBMC Evolutionary Biology, 2009
Background Thousands of parthenogenetic animal species have been described and cytogenetic manifestations of this reproductive mode are well known. However, little is understood about the molecular determinants of parthenogenesis.
Eads Brian D   +2 more
doaj   +1 more source

Penetrance of symbiont-mediated parthenogenesis is driven by reproductive rate in a parasitoid wasp [PDF]

open access: yesPeerJ, 2017
Trichogramma wasps are tiny parasitoids of lepidopteran eggs, used extensively for biological control. They are often infected with the bacterial symbiont Wolbachia, which converts Trichogramma to an asexual mode of reproduction, whereby females develop ...
Amelia R.I. Lindsey, Richard Stouthamer
doaj   +2 more sources

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