Results 41 to 50 of about 329,729 (302)

Host shifts and molecular evolution of H7 avian influenza virus hemagglutinin

Virology Journal, 2011
Evolutionary consequences of host shifts represent a challenge to identify the mechanisms involved in the emergence of influenza A (IA) viruses. In this study we focused on the evolutionary history of H7 IA virus in wild and domestic birds, with a ...
Stallknecht David E, Lebarbenchon Camille   +1 more
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Synthesis of time-to-amplitude converter by mean coevolution with adaptive parameters [PDF]

, 2011
Copyright © 2011 the authors and Scientific Research Publishing Inc. This work is licensed under a Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/)The challenging task to synthesize automatically a time-
Yerbol A. Sapargaliyev, Kalganova, T, Sapargaliyev, Y, Tatiana G. Kalganova   +3 more
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Differential genotype response to increased resource abundance helps explain parallel evolution of Daphnia populations in the wild

Ecology and Evolution, 2023
Under controlled laboratory conditions, previous studies have shown that selection can produce repeatable evolutionary trajectories. Yet, the question remains for many of these studies if, given identical starting populations, evolution in the wild ...
Kelsey Lyberger, Thomas W. Schoener
doaj   +1 more source

Convergent evolution of the annual life history syndrome from perennial ancestors

Frontiers in Plant Science, 2023
Despite most angiosperms being perennial, once-flowering annuals have evolved multiple times independently, making life history traits among the most labile trait syndromes in flowering plants.
Ane C. Hjertaas, Jill C. Preston, Kent Kainulainen, Aelys M. Humphreys, Aelys M. Humphreys, Siri Fjellheim   +5 more
doaj   +1 more source

Ecological causes of morphological evolution in the three-spined stickleback

, 2013
The central assumption of evolutionary theory is that natural selection drives the adaptation of populations to local environmental conditions, resulting in the evolution of adaptive phenotypes.
C. Smith (2247166), Robert J. Wootton, Wootton, R.J., R. Spence (7654601), Mirosław Przybylski, Smith, Carl, Spence, Rowena Grace Alison, Iain Barber (348101), Rowena Spence, Iain Barber, Przybylski, Mirosław, Carl Smith, R. J. Wootton (7654604), Barber, Iain, M. Przybylski (2489125)   +14 more
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Parallel Differentiation and Plastic Adjustment of Leaf Anatomy in Alpine Arabidopsis arenosa Ecotypes

Plants, 2022
Functional and structural adjustments of plants in response to environmental factors, including those occurring in alpine habitats, can result in transient acclimation, plastic phenotypic adjustments and/or heritable adaptation.
Clara Bertel, Dominik Kaplenig, Maria Ralser, Erwann Arc, Filip Kolář, Guillaume Wos, Karl Hülber, Andreas Holzinger, Ilse Kranner, Gilbert Neuner   +9 more
doaj   +1 more source

Attempting genetic inference from directional asymmetry during convergent hindlimb reduction in squamates

Ecology and Evolution, 2022
Loss and reduction in paired appendages are common in vertebrate evolution. How often does such convergent evolution depend on similar developmental and genetic pathways?
Samantha Swank, Ethan Elazegui, Sophia Janidlo, Thomas J. Sanger, Michael A. Bell, Yoel E. Stuart   +5 more
doaj   +1 more source

Parallel Evolution of Metazoan Mitochondrial Proteins [PDF]

Genome Biology and Evolution, 2016
Abstract Amino acid propensities at amino acid sites change with time due to epistatic interactions or changing environment, affecting the probabilities of fixation of different amino acids. Such changes should lead to an increased rate of homoplasies (reversals, parallelisms, and convergences) at closely related species.
Klink, Galya V., Bazykin, Georgii A.
openaire   +2 more sources

Rapidly evolving genes and stress adaptation of two desert poplars, Populus euphratica and P. pruinosa

, 2013
Understanding which genes have evolved rapidly with the recent tree speciation in arid habitats can provide valuable insights into different adaptation mechanisms. We employed a comparative evolutionary analysis of expressed sequence tags (ESTs) from two
Penghui Xie (420345), Zhang, Jian, Jianquan Liu (200999), Zhang Jian, Meagher Thomas R., Meagher, Thomas R., Lascoux, Martin, Xie, Penghui, Liu, Jianquan, Thomas R Meagher, Xie Penghui, Lascoux Martin, Martin Lascoux, Jian Zhang (1682), Martin Lascoux (201001), Jianquan Liu, Liu Jianquan, Jian Zhang, Lascoux, Martin,, Thomas R. Meagher (420346), Meagher, Thomas Robert, Penghui Xie   +21 more
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Parallel Evolution inStreptococcus pneumoniaeBiofilms [PDF]

Genome Biology and Evolution, 2016
Streptococcus pneumoniae is a commensal human pathogen and the causative agent of various invasive and noninvasive diseases. Carriage of the pneumococcus in the nasopharynx is thought to be mediated by biofilm formation, an environment where isogenic populations frequently give rise to morphological colony variants, including small colony variant (SCV)
Churton, Nicholas W.V., Misra, Raju V., Howlin, Robert P., Allan, Raymond N., Jefferies, Johanna, Faust, Saul N., Gharbia, Saheer E., Edwards, Richard J., Clarke, Stuart C., Webb, Jeremy S.   +9 more
openaire   +5 more sources