Results 21 to 30 of about 4,773,873 (317)

Comparing levels of geitonogamous visitation by honey bees and other pollinators

open access: yesJournal of Pollination Ecology, 2023
Geitonogamy, the transfer of pollen from one flower to another on the same plant, is often the primary means of self-pollination in flowering plants.
Dillon Travis, Joshua Kohn
doaj   +1 more source

Additive and non-additive epigenetic signatures of natural hybridization between fish species with different mating systems

open access: yesEpigenetics, 2022
Hybridization is a major source of evolutionary innovation. In plants, epigenetic mechanisms can help to stabilize hybrid genomes and contribute to reproductive isolation, but the relationship between genetic and epigenetic changes in animal hybrids is ...
Waldir M. Berbel-Filho   +7 more
doaj   +1 more source

Balancing selection in self‐fertilizing populations [PDF]

open access: yesEvolution, 2021
Self-fertilization commonly occurs in hermaphroditic species, either occasionally or as the main reproductive mode. It strongly affects the genetic functioning of a population by increasing homozygosity and genetic drift and reducing the effectiveness of recombination.
openaire   +3 more sources

Fertilization of Ascidians: Gamete Interaction, Self/Nonself Recognition and Sperm Penetration of Egg Coat

open access: yesFrontiers in Cell and Developmental Biology, 2022
Fertilization is one of the most important events in living organisms to generate a new life with a mixed genetic background. To achieve successful fertilization, sperm and eggs must undergo complex processes in a sequential order.
Takako Saito   +2 more
doaj   +1 more source

Self-fertilization in the freshwater snails Helisoma duryi and Helisoma trivolvis Autofecundação nos moluscos planorbídeos Helisoma duryi e Helisoma trivolvis

open access: yesMemorias do Instituto Oswaldo Cruz, 1988
Fifty specimens of five strains (10 per strain) of Helisoma duryi from Lima (Peru), St. Croix (Virgin Islands), Formosa (Brazil), Cartago (Costa Rica) and St. Vincent (Lesser Antilles), reared in isolation for about 150 days, laid 103 eggs.
W. Lobato Paraense, Lygia R. Corrêa
doaj   +1 more source

Microsatellite Primers for Camissoniopsis cheiranthifolia (Onagraceae) and Cross-Amplification in Related Species

open access: yesApplications in Plant Sciences, 2014
Premise of the study: We developed 24 nuclear microsatellite primers from an enriched genomic library for the Pacific coastal dune endemic Camissoniopsis cheiranthifolia to study the consequences of mating system differentiation, the genetics of species'
Adriana López-Villalobos   +2 more
doaj   +1 more source

Flaminia, a self-incompatible peach variety: Short communication

open access: yesHorticultural Science, 2003
This study showed that the peach variety Flaminia is self-incompatible in Northern Greece, and it produces fruits only after cross fertilization.
C.G. Tsipouridis, T. Thomidis
doaj   +1 more source

A general stochastic model for sporophytic self-incompatibility [PDF]

open access: yes, 2011
Disentangling the processes leading populations to extinction is a major topic in ecology and conservation biology. The difficulty to find a mate in many species is one of these processes.
Billiard, Sylvain, Tran, Viet Chi
core   +5 more sources

Asymmetrical hybridization and gene flow between Eisenia andrei and E. fetida lumbricid earthworms [PDF]

open access: yes, 2018
Uniformly pigmented Eisenia andrei (Ea) and striped E. fetida (Ef) lumbricid earthworms are hermaphrodites capable of self-fertilization, cross-fertilization, and asymmetrical hybridization.
Bigaj, Janusz   +3 more
core   +1 more source

Purging deleterious mutations under self fertilization: paradoxical recovery in fitness with increasing mutation rate in Caenorhabditis elegans. [PDF]

open access: yesPLoS ONE, 2010
The accumulation of deleterious mutations can drastically reduce population mean fitness. Self-fertilization is thought to be an effective means of purging deleterious mutations. However, widespread linkage disequilibrium generated and maintained by self-
Levi T Morran   +2 more
doaj   +1 more source

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