Results 31 to 40 of about 92,975 (280)
The Prediapause Stage of Aedes japonicus japonicus and the Evolution of Embryonic Diapause in Aedini
The genus Aedes is well known for its desiccation-resistant eggs, which frequently serve as an overwintering mechanism through diapause. Despite this, relatively little is known about the diapause and overwintering biology of most Aedes species including
Jake Bova, John Soghigian, Sally Paulson
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Two varieties of Bouteloua aristidoides have been recognized, the widespread var. aristidoides and the more narrowly distributed var. arizonica. The two varieties differ in inflorescence form even more than that seen between many other closely related ...
Luis Fernando Cuellar-Garrido +1 more
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Majority rule has transition ratio 4 on Yule trees under a 2-state symmetric model [PDF]
Inferring the ancestral state at the root of a phylogenetic tree from states observed at the leaves is a problem arising in evolutionary biology. The simplest technique -- majority rule -- estimates the root state by the most frequently occurring state ...
Mossel, Elchanan, Steel, Mike
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Reconstructing the Ancestral Germ Line Methylation State of Young Repeats [PDF]
One of the key objectives of comparative genomics is the characterization of the forces that shape genomes over the course of evolution. In the last decades, evidence has been accumulated that for vertebrate genomes also epigenetic modifications have to be considered in this context. Especially, the elevated mutation frequency of 5-methylcytosine (5mC)
Feuerbach, L. +3 more
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Platyhelminthes (flatworms) are a diverse invertebrate phylum useful for exploring life-history evolution. Within Platyhelminthes, only two clades develop through a larval stage: free-living polyclads and parasitic neodermatans.
Jessica A. Goodheart +4 more
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Using ancestral state reconstruction methods for onomasiological reconstruction in multilingual word lists [PDF]
AbstractCurrent efforts in computational historical linguistics are predominantly concerned with phylogenetic inference. Methods for ancestral state reconstruction have only been applied sporadically. In contrast to phylogenetic algorithms, automatic reconstruction methods presuppose phylogenetic information in order to explain what has evolved when ...
Jäger, Gerhard, List, Johann-Mattis
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When can we reconstruct the ancestral state? Beyond Brownian motion
Reconstructing the ancestral state of a group of species helps answer many important questions in evolutionary biology. Therefore, it is crucial to understand when we can estimate the ancestral state accurately. Previous works provide a necessary and sufficient condition, called the big bang condition, for the existence of an accurate reconstruction ...
Nhat L. Vu +4 more
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Understanding the processes that underpin adaptive evolutionary shifts within major taxonomic groups has long been a research directive among many evolutionary biologists.
L. Lee Grismer +4 more
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Common lizards break Dollo’s law of irreversibility: genome-wide phylogenomics support a single origin of viviparity and re-evolution of oviparity [PDF]
Dollo’s law of irreversibility states that once a complex trait has been lost in evolution, it cannot be regained. It is thought that complex epistatic interactions and developmental constraints impede the re-emergence of such a trait.
Elmer, Kathryn R. +2 more
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The Evolution and Biogeography of Wolbachia in Ants (Hymenoptera: Formicidae)
Wolbachia bacteria are widely distributed across invertebrate taxa, including ants, but several aspects of this host-associated interaction are still poorly explored, especially with regard to the ancestral state association, origin, and dispersion ...
Manuela O. Ramalho, Corrie S. Moreau
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