large lineage inthephylogenetic tree. actazool.org actazool.org 第一个支系包括蟒科的东方沙蟒和蟒2种蛇;第二个支系为蝰科3种蛇,即草原蝰、尖吻蝮、竹叶青组成一个单系 群;眼镜蛇科的眼镜蛇和银环蛇构成第三个支系;游蛇科的13种蛇构成了第四个支系,其中灰鼠蛇、乌梢蛇和赤 链蛇组成一个支系,锦蛇属的...
1) yielded a topology that showed distinct clusters of haplogroups HV, UK, TJ, and WIX and that had a good concordance with the European-mtDNA tree based on variation in the HVS-I (Richards et al. 1998). Specific clusters of polymorphisms served to determine all the haplogroups, and, ...
the complete chloroplast genome sequences of 19 Paeoniaceae species and 32 Ranunculaceae species were used to construct a phylogenetic tree.Stephania tetrandraserved as the outgroup (Fig.8). Results showed that all nodes in the phylogenetic tree had high bootstrap values. Paeoniaceae species...
Poisson tree processes (PTP) model for species delimitation was used for inferring the relationship between Trypanosoma spp. detected in this study and their closely related species. PTP species delimitation analysis was carried out via the bPTP webserver (Zhang et al., 2013). We employed a maxim...
The phylogenetic tree based on the neighbor-joining method was delineated in the Molecular Evolutionary Genetics Analysis v7.0 (MEGA v7.0) software44. The genetic distribution of 11 populations was conducted using STRUCTURE v.2.3.4 software46, for which the parameters were a100,000 lenth of burnin...
Phylogenetic tree of Trichomonadea based on ITS2 sequences, constructed with the maximum likelihood method and the Jukes–Cantor model. In each row, after the species or genus name, the isolation source, the country of origin, and the GenBank accession number are shown. Sequences obtained in...
We further tested two alternative tree hypotheses for Carychium in a model selection framework: i) constrained monophyletic Asian Carychium and ii) constrained monophyletic American Carychium (see Additional file 1). Both constraints received higher support than the unconstrained phylogenetic hypothesis....
family grouped with species of a obviously non-related family) were re-sequenced or eliminated from subsequent analyses. Given the degree of redundancy in taxonomic sampling, errors can be detected when sequences from putative congeneric or conspecific specimens are not placed together in the tree. ...
The final visualization of phylogenetic trees was obtained with FigTree v1.4.3.3831. Plant U1-70K sequences (Chen et al. 2019) were used to construct a larger tree against animal and yeast U1-70K sequences for cross-kingdom comparison. Investigation of protein domain, gene structure and ...
Evaluation of the accuracy of the phylogenetic tree Results The evolutionary distance calculated by SD is highly correlated with protein structural similarity For proteins in constructed superfamily database with varying sequence identities, we investigated the relationship between the structural similarity scor...