Rare events have played an increasing role in molecular phylogenetics as potentially homoplasy-poor characters. In this contribution we analyze the phylogenetic information content from a combinatorial point of view by considering the binary relation on the set of taxa defined by the existence of a single event separating two taxa. We show that the graph-representation of this relation must be ...

two species of the family colubridae were compared based on cranial osteology. the specimens were from kermanshah province (2010–2012). we compared the skulls of the two species and distinguished their differences. according to our study, eight elements of the skull are clearly different between the two species. these differences are speculated to relate to different diets, prey size or conclud...

The symmetric version of Fitch's xenology relation coincides with class of complete multipartite graph and thus cannot convey any non-trivial phylogenetic information.

A recent advance in the phylogenetic comparative analysis of continuous traits has been explicit, model-based measurement of "phylogenetic signal" in data sets composed of observations collected from species related by a phylogenetic tree. Phylogenetic signal is a measure of the statistical dependence among species' trait values due to their phylogenetic relationships. Although phylogenetic sig...

With 3,480 E. coli strains isolated from the Yeongsan River basin, South Korea, correlations between phylogenetic groups and horizontal fluorophore enhanced rep-PCR (HFERP) genotypes were examined, and environmental factors affecting E. coli phylogenetic groups in the river water were determined. Interestingly, multidimentional scaling (MDS) analyses based on HFERP DNA fingerprint data indicate...

In this paper, we describe the problem of cognate identification and its relation to phylogenetic inference. We introduce subsequence based features for discriminating cognates from non-cognates. We show that subsequence based features perform better than the state-of-the-art string similarity measures for the purpose of cognate identification. We use the cognate judgments for the purpose of ph...

Genome-wide identification and expression analysis along the leaf developmental gradient of sigma factor gene family in foxtail millet (Setaria italica)Hongyun Liu, Jinjin Cheng, Siyuan Hui Fan , Bo Wen Zheng Liu

We have developed a tool in order to identify sequences in relation to a sequence family database. This tool combines several algorithms: BLAST, multiple sequence alignment and phylogenetic tree building. After identification of the most similar gene family to the query sequence, this query sequence is added to the whole family alignment and the phylogenetic tree of the family is rebuilt includ...