Similar(60)
In our analysis, the ABCB1-ABCB2 showed a relatively recent duplication (with low Ks), and more important, the ancestral state may have shown both expression patterns of the descendants prior to duplication (Table 4), therefore, this pair is the most probable duplicates for subfunctionalization.
Under this scenario, neofunctionalization is likely equally probable in either duplicate, resulting in the relatively similar frequencies of neofunctionalized parent and child copies that we observed.
Consequently, the emergence of novel ORFs (i.e. LSGs) may be easier/more probable from a duplicate of an existing gene than from intergenic DNA (even in the cases where the reading frame of the novel gene differs from that of the parental gene).
Phylogenetic analysis of the TrwL duplicates revealed probable neofunctionalization within a subset of the duplicates, while the flanking TrwJ and TrwH duplicates of the trwJ-H operon appeared to be products of LGT speculated to have arisen due to the coevolution of these OM proteins with erythrocyte surface structures.
Similar proportions of gene gains are inferred to result from duplication and acquisition by gene transfer across the genus, although duplication is more frequent among recent gains (singleton genes), consistent with the hypothesis that although transient duplication events may be relatively frequent, fixation of exogenous genetic is more probable than fixation of duplicated material.
In addition, our findings suggest probable subfunctionalization of the duplicated Ddx3 genes in teleost through evolution.
It was also noted that several sequences identified as probable most recent gene duplicates in the two plant species were located on different chromosomes (Tables 2, 3).
Then, comparisons of genomic structure, molecular evolutionary rate, and expression pattern of the two Ddx3 genes in Japanese flounder were performed; results revealed probable subfunctionalization of teleost duplicated Ddx3 genes.
A JATAC distance of 0 does not exactly correspond to a cd-hit-454 stringency of 100%, as it is a lot more probable that two artificial duplicates share the same nucleotide sequence than that they share the exactly identical flowgram to the second decimal place.
RiOG_2080 is part of a probable multigene family that is duplicated in most rickettsial genomes.
Since the duplication is fairly old and the pairwise Ka/Ks hints at negative selective pressure operating until quite recently (Table 4), thus, a recent, rapid pseudogenization of both duplicates seems the most probable explanation.
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