Results 31 to 40 of about 19,813 (203)

Identifying and Engineering Genes for Parthenogenesis in Plants

open access: yesFrontiers in Plant Science, 2019
Parthenogenesis is the spontaneous development of an embryo from an unfertilized egg cell. It naturally occurs in a variety of plant and animal species.
Kitty Vijverberg   +2 more
doaj   +1 more source

Geographic parthenogenesis and plant-enemy interactions in the common dandelion

open access: yesBMC Evolutionary Biology, 2013
Background Many species with sexual and asexual variants show a pattern of geographic parthenogenesis where asexuals have broader and higher-latitude distribution than sexuals.
Verhoeven Koen JF, Biere Arjen
doaj   +1 more source

Variability of Reproduction Pathways in the Central-European Populations of Hawthorns with Emphasis on Triploids

open access: yesPlants, 2022
The role of apomeiosis, parthenogenesis, and pseudogamy in the asexual reproduction of some plant groups has not been fully elucidated in relation to species diversification.
Vladislav Kolarčik   +5 more
doaj   +1 more source

“Jack‐of‐all‐trades” is parthenogenetic

open access: yesEcology and Evolution, 2022
Sex is evolutionarily more costly than parthenogenesis, evolutionary ecologists therefore wonder why sex is much more frequent than parthenogenesis in the majority of animal lineages. Intriguingly, parthenogenetic individuals and species are as common as
Mark Maraun   +8 more
doaj   +1 more source

Distribution of \u3ci\u3ePelecinus Polyturator\u3c/i\u3e in Wisconsin (Hymenoptera: Pelecinidae), With Speculations Regarding Geographical Parthenogenesis [PDF]

open access: yes, 2017
The geographical distribution of Pelecinus polyturator in Wisconsin is summarized. Only five males have been recorded; a recently collected male from the University of Wisconsin Field Station in Ozaukee County represents the first male collected in the ...
Young, Daniel K
core   +2 more sources

Parthenogenesis in a captive Asian water dragon (Physignathus cocincinus) identified with novel microsatellites.

open access: yesPLoS ONE, 2019
Reptiles show varying degrees of facultative parthenogenesis. Here we use genetic methods to determine that an isolated, captive female Asian water dragon produced at least nine offspring via parthenogenesis. We identified microsatellites for the species
Kyle L Miller   +8 more
doaj   +1 more source

Simulated emergence of cyclic sexual-asexual reproduction

open access: yes, 2001
Motivated by the cyclic pattern of reproductive regimes observed in some species of green flies (``{\it aphids}''), we simulate the evolution of a population enduring harsh seasonal conditions for survival.
A. Racco   +14 more
core   +1 more source

Comparative Genomics of a Parthenogenesis-Inducing Wolbachia Symbiont. [PDF]

open access: yes, 2016
Wolbachia is an intracellular symbiont of invertebrates responsible for inducing a wide variety of phenotypes in its host. These host-Wolbachia relationships span the continuum from reproductive parasitism to obligate mutualism, and provide a unique ...
Lindsey, Amelia RI   +3 more
core   +3 more sources

Opportunities and Challenges in Doubled Haploids and Haploid Inducer-Mediated Genome-Editing Systems in Cucurbits

open access: yesAgronomy, 2020
Doubled haploids have played a major role in cucurbit breeding for the past four decades. In situ parthenogenesis via irradiated pollen is the preferred technique to obtain haploid plantlets whose chromosomes are then doubled in Cucurbitaceae, such as ...
Isidre Hooghvorst, Salvador Nogués
doaj   +1 more source

Origin and genetic diversity of diploid parthenogenetic Artemia in Eurasia [PDF]

open access: yes, 2013
There is wide interest in understanding how genetic diversity is generated and maintained in parthenogenetic lineages, as it will help clarify the debate of the evolution and maintenance of sexual reproduction.
Amat, Francisco   +2 more
core   +2 more sources

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