Some protists have also experienced species-specific massive duplication of their core trGTPases.
RC infants, but not ST infants, experienced species-typical communicative interactions with caregivers who were trained to interact in chimpanzee-appropriate ways (RC: 20 hrs/week; ST: absent).
(2014) systematically reported that NBS-encoding genes in Brassica species experienced species-specific gene family amplification by tandem duplication after the divergence of B. rapa and B. oleracea.
The NB-LRR homologues in the whole-genome triplicated Brassica ancestor were deleted or lost quickly, and seem to have experienced species-specific amplification by tandem duplication [ 32, 33].
But after divergence of B. rapa and B. oleracea approximately 3.7 MYA, NBS-encoding genes in Brassica species experienced species-specific gene amplification by mechanism of tandem duplication to adopt environment selection.
Tandem duplication and whole genome triplication (WGT) analyses revealed that after WGT of the Brassica ancestor, NBS-encoding homologous gene pairs on triplicated regions in Brassica ancestor were deleted or lost quickly, but NBS-encoding genes in Brassica species experienced species-specific gene amplification by tandem duplication after divergence of B. rapa and B. oleracea.
Nucleotide diversity reflects the combined history of selection, migration, recombination and mating systems experienced by species.
Chimpanzees, unlike modern humans, have not experienced a species wide massive population bottleneck and harbor more genetic variation than humans.
During the course of an adaptive radiation, disruptive natural and sexual selection regimes experienced by species in contrasting environments drive adaptive divergence and speciation [ 59].
This finding reinforces the probability of zoonotic origin of human cases from a rodent-borne zoonotic pool and supports the view that closely related hantavirus lineages associated with distinct rodent species may be experiencing cross-species transmission (spillover) (13 , 18).
After the divergence of plant species from ancestral species, plant species have experienced tandem duplication events and formed species-specific tandem repeat or duplicated genes.
