Results 11 to 20 of about 147,088 (237)

Phylogenomic timetree-calibrated speciation clocks for Caenorhabditis nematodes reveal slow but disproportionate accumulation of post-zygotic reproductive isolation. [PDF]

open access: yesPLoS Genetics
Reproductive isolation and genomic divergence both accumulate over time in the formation and persistence of distinct biological species. The pace of "speciation clocks" quantified with pre-zygotic and post-zygotic reproductive isolation, however, differs
Daniel D Fusca   +3 more
doaj   +2 more sources

A history of studies of reproductive isolation between Drosophila pseudoobscura and D. persimilis [PDF]

open access: yesFly
Drosophila pseudoobscura and D. persimilis are a sister species pair that have been used as a model for studies of reproductive isolation and speciation for almost 100 years owing to their close evolutionary history, well characterized genetic ...
Stewart Leigh, Michael G. Ritchie
doaj   +2 more sources

Reproductive isolation arises during laboratory adaptation to a novel hot environment [PDF]

open access: yesGenome Biology
Background Reproductive isolation can result from adaptive processes (e.g., ecological speciation and mutation-order speciation) or stochastic processes such as “system drift” model.
Sheng-Kai Hsu   +6 more
doaj   +2 more sources

Partial and asymmetrical reproductive isolation between two sympatric tropical shrub species: Cnidoscolus aconitifolius and C. souzae (Euphorbiaceae) [PDF]

open access: yesEcology and Evolution, 2023
Reproductive isolation is conferred by several barriers that occur at different stages of reproduction. Comprehensive reviews on the topic have identified that barriers occurring prior to zygote formation are often stronger than those that occur ...
Miguel A. Munguía‐Rosas   +2 more
doaj   +2 more sources

Two complementary genes in a presence-absence variation contribute to indica-japonica reproductive isolation in rice [PDF]

open access: yesNature Communications, 2023
Understanding the evolutionary forces in speciation is a central goal in evolutionary biology. Asian cultivated rice has two subspecies, indica and japonica, but the underlying mechanism of the partial reproductive isolation between them remains obscure.
Daiqi Wang   +20 more
doaj   +2 more sources

Pre- and Post-Zygotic Barriers Contribute to Reproductive Isolation and Correlate with Genetic Distance in Cucumis [PDF]

open access: yesPlants, 2023
Hybridization between Cucumis species, including cultivated melon (C. melo), is hampered by Interspecific Reproductive Barriers (IRBs). However, the nature of IRBs in Cucumis is largely unknown.
María Ferriol   +6 more
doaj   +2 more sources

Genetic Basis of Reproductive Isolation in Torrey Pine (Pinus torreyana Parry): Insights From Hybridization and Adaptation [PDF]

open access: yesEvolutionary Applications
Tree species are often locally adapted to their environments, but the extent to which environmental adaptation contributes to incipient speciation is unclear.
Lionel N. Di Santo   +3 more
doaj   +2 more sources

Patterns of reproductive isolation in toads.

open access: yesPLoS ONE, 2008
Understanding the general features of speciation is an important goal in evolutionary biology, and despite significant progress, several unresolved questions remain.
John H Malone, Brian E Fontenot
doaj   +4 more sources

What is reproductive isolation? [PDF]

open access: yesJ Evol Biol, 2022
Abstract Reproductive isolation (RI) is a core concept in evolutionary biology. It has been the central focus of speciation research since the modern synthesis and is the basis by which biological species are defined. Despite this, the term is used in seemingly different ways, and attempts to quantify RI have used very different ...
Westram AM   +3 more
europepmc   +3 more sources

Multiple factors contribute to reproductive isolation between two co-existing Habenaria species (Orchidaceae). [PDF]

open access: yesPLoS ONE, 2017
Reproductive isolation is a key feature that forms barriers to gene flow between distinct plants. In orchids, prezygotic reproductive isolation has been considered to be strong, because their associations with highly specific pollinators.
Wenliu Zhang, Jiangyun Gao
doaj   +1 more source

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