Results 61 to 70 of about 45,029 (376)

To the approval of the Galician carp group

Ribogospodarsʹka Nauka Ukraïni, 2021
Purpose. To evaluate the reproductive indicators and exterior characteristics of the breeding brood stock of the Galician carp group at the original farms, namely farms "Korop" and "Dzherelo", State Enterprise "Lviv Experimental Station". Methodology.
V. Gurbyk, O. Striletsky, H. Kurinenko, V. Tkachuk, Yu. Chernik   +4 more
doaj   +1 more source

Performance of local and local x improved chicken crosses under semi-intensive management system in Northern Uganda

Cogent Food & Agriculture, 2023
Despite the efforts to improve Uganda’s chicken production through crossbreeding, limited research has been conducted to establish the performance of local x improved chicken crosses under the dominant management systems used by chicken rearing ...
Samuel Ochora, Junior Senyonga Kasima, Wilfred Marion Okot, Elly Kurobuza Ndyomugyenyi   +3 more
doaj   +1 more source

Speciation Through the Lens of Population Dynamics: A Theoretical Primer on How Small and Large Populations Diverge

Population Ecology, EarlyView.
Population size and dynamics fundamentally shape speciation by influencing genetic drift, founder events, and adaptive potential. Small populations may speciate rapidly due to stronger drift, whereas large populations harbor more genetic diversity, which can alter divergence trajectories. We highlight theoretical models that incorporate population size
Ryo Yamaguchi, Hidaka Kubo, Tokuya Ogawa, Hayate Omura   +3 more
wiley   +1 more source

A stepwise emergence of evolution in the RNA world

FEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Genomic conservation of Mongolian horses promoted by preservation of the intangible cultural heritage of Naadam in Mongolia

Conservation Letters
Uncontrolled crossbreeding is a major challenge to the conservation of landrace horses in East Asia. Understanding the factors driving this trend is crucial for effective conservation efforts.
Togtokh Mongke, Undarmaa Budsuren, Aertengqimike Tiemuqier, Elif Bozlak, Barbara Wallner, Samdanjamts Dulamsuren, Dorjsuren Daidiikhuu, Saruuljargal Amgalan, Tana An, Baoyindeligeer Mongkejargal, Wenbo Li, Sarula Borjgin, Manglai Dugarjaviin, Haige Han   +13 more
doaj   +1 more source

Evolutionary interplay between viruses and R‐loops

FEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi, Zita Képes, Zoltán Szabó, Eszter Csoma, Lóránt Székvölgyi   +4 more
wiley   +1 more source

Origin of life: β‐sheet amyloid conformers as the primordial functional polymers on the early Earth and their role in the emergence of complex dynamic networks

FEBS Letters, EarlyView.
The amyloid world hypothesis of the origin‐of‐life posits that the first functional polymers on the early Earth were structurally stable cross‐β‐sheet‐based peptide amyloids capable of Darwinian‐like evolution. Peptide amyloids display self‐replication and information transfer, as well as catalytic, adaptive, and evolutive properties.
Carl Peter J. Maury
wiley   +1 more source

Componentes do peso vivo em cordeiros e borregos Polwarth e cruzas Texel x Polwarth Live weight components in Polwarth and Texel x Polwarth lambs and hoggets

Ciência Rural, 1995
O estudo teve por objetivo comparar e quantificar o peso vivo ao abate e seus componentes em cordeiros e borregos Polwarth (Ideal) com cruzas de Texel x ovelhas Polwarth. Foram sacrificados 59 cordeiros com 116 dias de idade, sendo 40 Polwarth (21 machos
José Carlos Osório, Isidro Sierra, Carlos Sañudo, José Luiz Guerreiro, Pedro Osório Jardim   +4 more
doaj   +1 more source

Weight gain and resistance to gastrointestinal nematode infections in two genetically diverse groups of cattle [PDF]

, 2017
Body weight gain (BWG) and gastrointestinal nematode challenge (GIN) were investigated in two genetically diverse groups of cattle. Thirty-two dairy calves (D = Swedish Red/Holstein) and 31 dairy × beef crosses (C = Swedish Red/Holstein × Charolais ...
Höglund, Johan
core   +1 more source

Redox‐dependent binding and conformational equilibria govern the fluorescence decay of NAD(P)H in living cells

FEBS Letters, EarlyView.
In this work, we reveal how different enzyme binding configurations influence the fluorescence decay of NAD(P)H in live cells using time‐resolved anisotropy imaging and fluorescence lifetime imaging microscopy (FLIM). Mathematical modelling shows that the redox states of the NAD and NADP pools govern these configurations, shaping their fluorescence ...
Thomas S. Blacker, Nimit Mistry, Nicoletta Plotegher, Elizabeth R. Westbrook, Michael D. E. Sewell, John Carroll, Gyorgy Szabadkai, Angus J. Bain, Michael R. Duchen   +8 more
wiley   +1 more source