Phylogenetic tree, a diagram showing the evolutionary interrelations of a group of organisms derived from a common ancestral form. The ancestor is in the tree “trunk”; organisms that have arisen from it are placed at the ends of tree “branches.” The
by the fragment size amplified, was 390- 400 bp 12S ribosomal RNA gene in Rhipicephalus turanicus and Rhipicephalus sanguineus isolate samples from the under-study animals. The accession numbers in NCBI-Genbank are ON211060 and ON211307 respectively. Phylogenetic tree analysis was ...
Knowing phylogenetic relationships among species is fundamental for many studies in biology. An accurate phylogenetic tree underpins our understanding of the major transitions in evolution, such as the emergence of new body plans or metabolism, and is ke
tree is unrooted. (b) Evolutionary relationships are represented by the tree topology, i.e. the branching order. This is independent of the way that branches are represented, or the vertical arrangement of terminal nodes. Despite different vertical arrangements and styles, all three trees have ...
The widespread use of protein-coding genes to infer ancient eukaryotic phylogeny was a gradual introduction to a field that was heavily dominated by the "ribosomal RNA tree," which was the SSU rRNA tree. The central aspect of the Archezoa hypothesis proved more difficult to test, but the ...
A multialignment and a phylogenetic analysis of 63 cystatins, 32 of which are PhyCys, demonstrate that all PhyCys cluster in a major evolutionary tree branch and support the classification of PhyCys as a new cystatin family. The PhyCys also possess a specific consensus sequence [LVI]-[AGT]...
Apusomonads are a mysterious group of heterotrophic gliding biflagellates branching deeply in the eukaryotic tree of life as sister group to opisthokonts (including animals, fungi and a variety of unicellular protists). Despite their evolutionary interest, their diversity and ecology remain largely ...
The phylogeny of 12 species and reference strains of and was studied based on partial 593-bp gene sequences. The topology of the phylogenetic neighbor-joining tree based on the gene was similar to that of the tree based on the 16S rRNA gene. However, was found to provide a better resoluti...
Analysis of our matrix yielded a single most-parsimonious tree. From our analysis we conclude the following: (1) Class Digononta is paraphyletic; (2) it is still premature to reject rotiferan monophyly; (3) the classification hierarchy that best conforms to this morphologically based, cladistic...
The degree to which plants and animals retain their ancestral ecological traits and environmental distributions ('niche conservatism') is hotly debated, in part because of its relevance to the fate of modern species facing climate change. A tendency towa