Results 91 to 100 of about 55,223 (296)

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

open access: yesThe Anatomical Record, EarlyView.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman   +4 more
wiley   +1 more source

Epigenetic stress memory for predictive and heritable crop epibreeding

open access: yesPlant Stress
Abiotic stress remains a major challenge to crop productivity, and plants rely on epigenetic regulation to rapidly adjust gene expression through reversible and heritable mechanisms that determine stress memory and phenotypic traits. The understanding of
Mughair Abdul Aziz, Khaled Masmoudi
doaj   +1 more source

Discovery of quantitative trait loci for resistance to parasitic nematode infection in sheep: I. Analysis of outcross pedigrees

open access: yesBMC Genomics, 2006
Background Currently most pastoral farmers rely on anthelmintic drenches to control gastrointestinal parasitic nematodes in sheep. Resistance to anthelmintics is rapidly increasing in nematode populations such that on some farms none of the drench ...
Greer Gordon J   +13 more
doaj   +1 more source

Genetic Diversity of Selected Upland Rice Genotypes (Oryza sativa L.) for Grain Yield and Related Traits [PDF]

open access: yes, 2018
Seventy-seven upland rice genotypes including popular cultivars in Nigeria and introduced varieties selected from across rice-growing regions of the world were evaluated under optimal upland ecology.
Adegbehingbe, F.   +7 more
core   +1 more source

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

open access: yesThe Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Appetitive operant conditioning in mice: heritability and dissociability of training stages

open access: yesFrontiers in Behavioral Neuroscience, 2010
To study the heritability of different training stages of appetitive operant conditioning, we carried out behavioural screening of 5 standard inbred mouse strains, 28 recombinant-inbred (BxD) mouse lines and their progenitor strains C57BL/6J and DBA/2J ...
Hemi A I Malkki   +4 more
doaj   +1 more source

2D association and integrative omics analysis in rice provides systems biology view in trait analysis. [PDF]

open access: yes, 2018
The interactions among genes and between genes and environment contribute significantly to the phenotypic variation of complex traits and may be possible explanations for missing heritability.
Dai, Xinbin   +3 more
core   +2 more sources

Endothermy, neuron counts, and other issues: Further remarks on neurocognitive evolution in fossil vertebrates

open access: yesThe Anatomical Record, EarlyView.
Abstract Last year, we challenged the view that large‐bodied theropod dinosaurs such as Tyrannosaurus rex resembled primates in cognition and behavior, a proposition made by Herculano‐Houzel in 2023. More recently, Jensen et al. have criticized our work on this topic, raising methodological and conceptual issues.
Kai R. Caspar   +5 more
wiley   +1 more source

Host genetics influence the rumen microbiota and heritable rumen microbial features associate with feed efficiency in cattle

open access: yesMicrobiome, 2019
Background The symbiotic rumen microbiota is essential for the digestion of plant fibers and contributes to the variation of production and health traits in ruminants.
Fuyong Li   +8 more
doaj   +1 more source

High Heritability Is Compatible with the Broad Distribution of Set Point Viral Load in HIV Carriers. [PDF]

open access: yes, 2015
Set point viral load in HIV patients ranges over several orders of magnitude and is a key determinant of disease progression in HIV. A number of recent studies have reported high heritability of set point viral load implying that viral genetic factors ...
Bonhoeffer, S, Fraser, C, Leventhal, GE
core   +3 more sources

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