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Selective intra-dinucleotide interactions and periodicities of bases separated by k sites: A new vision and tool for phylogeny analyses
(BioMed Central Ltd., 2017)
© The Author(s) 2017. Direct tests of the random or non-random distribution of nucleotides on genomes have been devised to test the hypothesis of neutral, nearly-neutral or selective evolution. These tests are based on the ...
Evolução cromossômica em Erythrinus erythrinus (Characiformes, Erythrinidae). Citogenética comparativa entre cariomorfos
(Universidade Federal de São CarlosBRUFSCarPrograma de Pós-Graduação em Genética Evolutiva e Biologia Molecular - PPGGEv, 2013-08-08)
Erythrinidae is a relatively small Characiformes fish family, but widely distributed in the Neotropics. This family comprises only three genera: Hoplias, Hoplerythrinus and Erythrinus, all endemic to Central and South ...
A glimpse into the DNA virome of the unique “living fossil” Welwitschia mirabilis
(Elsevier, 2022-08-10)
Here, we report the identification and characterization of four novel DNA viruses from Welwitschia mirabilis
transcriptomic and genomic datasets. Complete circular virus-like sequences with affinity to members of ...
Inside-out flowers of Lacandonia brasiliana (Triuridaceae) provide new insights into fundamental aspects of floral patterning
(Peerj Inc, 2016-02-04)
Background and Aims. A recently described Brazilian species, Lacandonia brasiliana, shares with its longer established putative sister species from Mexico, L. schismatica, inverted floral patterning (carpels surrounding ...
Mixed evolutionary traits of Tolypella (section Rothia, Charales) compared with Chara and Nitella shown by ultrastructure of vegetative internodal cells
(Elsevier Science, 2015-01)
The ultrastructure of vegetative internodal cells in a representative of the genus Tolypella (section Rothia)is described for the first time for Tolypella intricata. The most striking difference compared with the cells ...
Enduring evolutionary embellishment of cloudinids in the Cambrian
(Royal Soc, 2021-12-08)
The Ediacaran-Cambrian transition and the following Cambrian Explosion are among the most fundamental events in the evolutionary history of animals. Understanding these events is enhanced when phylogenetic linkages can be ...
Ornithosuchidae: a group of Triassic archosaurs with a unique ankle joint
(Geological Society of London, 2013-06)
The ornithosuchids were a group of archosaurs with body lengths ranging from 2 to 4 m recorded from Upper Triassic beds in Argentina and Scotland. The group was defined as a nodebased clade including Ornithosuchus longidens, ...
Biological shape analysis by digital curvature
(Pergamon-elsevier Science LtdOxfordInglaterra, 2004)
The evolution of the meatal chamber in crocodyliforms
(2016-05-01)
The unique outer ear of crocodylians consists of a large meatal chamber (MC) concealed by a pair of muscular earlids that shape a large part of the animal's head. This chamber is limited medially by the enlarged tympanic ...