Third, the conservation of the identity of the species was only guaranteed by the transmission of this hereditary material unaltered.
Among the miRNA sequences obtained from P. yezoensis, members in 53 out of 224 families show a lack of conservation of sequence identity when comparing to orthologs in 18 other plant species.
Conservation of 90% identity or better in this seed region, between C. intestinalis and C. savignyi, was enforced.
Therefore, the only explanation seems to be that there is no evolutionary conservation of the identity of translationally regulated genes in these two haloarchaeal species of different genera.
Multiple lines of evidence indicate the extreme conservation of sequence identity is not due to selection, including the highly fragmented nature of the Helitrons identified and the lack of any signatures of selection at the nucleotide level.
Among the miRNA sequences obtained from Japanese apricot, members in five of families (miR403, miR535, miR827, miR828 and miR2111) showed a lack of conservation of sequence identity compared to orthologues from 18 other plant species.
We may postulate that the unusual conservation of sequence identity for the region 436 to 746 of TLR1 and TLR6, in all nine mammalian species for which complete sequence information is available, reflects strong selective mechanisms that restrained divergence of this region.
The conservation of the identity of preferred codons at these different evolutionary time scales may therefore lend further support to the suggestion that the mechanisms underlying selection on codon bias may be quite conserved between plant species (Qiu et al. 2010).
The starch catalytic and glycosyltransferase domains characteristic of SSs are present in the C-terminus, and conservation of sequence identities at the two putative ADPglucose binding motifs, i.e. K VGGL and KTGGL, was found between this wheat cDNA and the rice SSIV and SSIII Classes.
With immune pressure driving surface variation to extremes, it is likely that retention of conserved domain architecture and surface interaction potential, rather than conservation of amino acid identity, is a general feature of PfEMP1 and other divergent parasite protein families.
Just as the gene order is less conserved than that in Mytilus species, Crassostrea species exhibit lower conservation of amino acid identity in all protein-coding genes (Table 2).
