Results 91 to 100 of about 8,997 (265)

Selection responses of means and inbreeding depression for female fecundity in Drosophila melanogaster suggest contributions from intermediate-frequency alleles to quantitative trait variation [PDF]

open access: yes, 2007
The extent to which quantitative trait variability is caused by rare alleles maintained by mutation, versus intermediate-frequency alleles maintained by balancing selection, is an unsolved problem of evolutionary genetics.
Borthwick, Helen   +2 more
core   +1 more source

Dissection of heterotic loci for grain yield using interconnected chromosome segment substitution lines in rice

open access: yesCrop Journal, 2022
Heterosis contributes greatly to crop production, but the genetic basis of heterosis is not fully understood. To identify heterotic loci (HLs) for grain yield, 12 yield traits were evaluated in four rice (Oryza sativa L.) mapping populations: one ...
Chaopu Zhang   +6 more
doaj   +1 more source

Seeding density alters the role of soil moisture in structuring plant abundance during prairie restoration

open access: yesRestoration Ecology, Volume 34, Issue 1, January 2026.
Restoration practitioners often seek to reestablish native plant communities through seed sowing; however, the effectiveness can vary across species and soil resource gradients. We asked how seeding density and first‐year, plot‐level soil moisture affect the abundances of 11 tallgrass prairie species 4 years after seeding and whether species‐level ...
Isabelle A. Turner   +2 more
wiley   +1 more source

Expression of DLK1 and MEG3 genes in porcine tissues during postnatal development

open access: yesGenetics and Molecular Biology, 2010
The Drosophila-like homolog 1 (DLK1), a transmembrane signal protein similar to other members of the Notch/Delta/Serrate family, regulates the differentiation process in many types of mammalian cells.
Maria Oczkowicz   +4 more
doaj   +1 more source

Evolutionary implications of a high selfing rate in the freshwater snail Lymnaea truncatula. [PDF]

open access: yes, 2003
Self-compatible hermaphroditic organisms that mix self-fertilization and outcrossing are of great interest for investigating the evolution of mating systems.
Degen, L.   +3 more
core   +1 more source

Soil nutrient availability rather than spatial nutrient heterogeneity shapes the intraspecific response of root architectural, morphological and mycorrhizal traits in Vaccinium myrtillus

open access: yesJournal of Ecology, Volume 113, Issue 12, Page 3678-3699, December 2025.
This study tests how nutrient availability and spatial distribution influence root nutrient acquisition strategies of Vaccinium myrtillus in temperate forests. Greater nutrient availability was associated with shorter, thicker and denser roots, whereas patchy nutrient distribution only increased variability in root phosphatase activity.
Barbara Meyers   +4 more
wiley   +1 more source

[Open peer commentary] Is genomics bad for you? [PDF]

open access: yes, 2012
The plasticity of the genome complicates genetic causation, but should be investigated from a functional perspective. Specific adaptive hypotheses are referenced in the target article, but it is also necessary to explain how the integrity of the genome ...
Benjamin J. A. Dickins, Hastings
core   +1 more source

Heterozygous alleles restore male fertility to cytoplasmic male-sterile radish (Raphanus sativus L.): a case of overdominance

open access: yesJournal of Experimental Botany, 2013
The practice of hybridization has greatly contributed to the increase in crop productivity. A major component that exploits heterosis in crops is the cytoplasmic male sterility (CMS)/nucleus-controlled fertility restoration (Rf) system.
Z. Wang   +6 more
semanticscholar   +1 more source

Genetic and environmental factors associated with survival of a rare songbird in a fragmented urban landscape

open access: yesConservation Science and Practice, Volume 7, Issue 12, December 2025.
We conducted individual banding and resighting studies and collected genetic data in populations of coastal Cactus Wrens in Orange and San Diego Counties between 2009 and 2020. We found that survival was much lower for hatch year birds than after hatch year birds and that higher precipitation and heterozygosity had positive effects on survival. Results
Amy G. Vandergast   +6 more
wiley   +1 more source

Influence of Dominance and Drift on Lethal Mutations in Human Populations

open access: yesFrontiers in Genetics, 2020
We consider disease-causing mutations that are lethal when homozygous. Lethality involves the very strongest form of negative selection, with the selection coefficient against the disease-carrying homozygote having its maximum value of unity.
David Waxman, Andrew D. J. Overall
doaj   +1 more source

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