Given the co-occurrence of multiple, ecologically divergent species within the Alpine lake flocks and the overall youth of the radiation, heterogeneous genomic divergence between divergent species is expected [ 14].
First, these genes are evolutionarily conserved in many phylogenetically divergent species; Second, multiple genes are present in a species; Third, these genes are ubiquitously expressed throughout development and adult tissues (unpublished data).
Ribosomal topologies imply that morphologically similar Oncholaimus and Viscosia species represent multiple divergent lineages within the Oncholaimoidea (Additional file 2, Figure S1), suggesting that both genera should be the focus of an extensive taxonomic revision.
A high degree of phylogeographic structure characterizes both Bolitoglossa rufescens and B. occidentalis, as revealed both by the significant phylogeographic association test from Phylomapper and the presence of multiple divergent lineages present within both species.
Using fluorescence in situ hybridization, clone contig assembly, sequence annotation and repeat analyses, we have examined sequence from a conserved EB that has been reused multiple times in the derivation of divergent species karyotypes within the marsupial lineage (EB: Meu1q).
Two factors have been implicated: the presence of multiple divergent copies of this gene in a single genome in many haloarchaeal species and that recombination of the rRNA gene occurs frequently between species [ 36].
Plant species and hybrid and polyploid ones in particular, often contain several rDNA loci with multiple divergent ITS sequence types.
In MyD88-TIR domain the multiple sequence alignment and secondary structure prediction and 2(b)) also revealed a good conservation among the phylogenetically divergent species.
For more divergent species, the purifying selective pressure can be measured through the imprint it makes on the multiple sequence alignment of proteins in an ortholog group.
