Year: 2022

CONSERVATIVE ASSUMPTION. “Genes transferred between more divergent species would be easily detected as conflicts with this consensus. (If reality is close to this model, dominated by vertical inheritance, then interdomain and interphylum horizontal gene transfer events promise to provide an excellent means of correlating evolutionary events in the different parts of the tree of life. For example, the origin of the cyanobacteria must predate the acquisition of chloroplast by early eukaryotes.).” https://lnkd.in/djKBnru View in LinkedIn

RANDOM GENE SHARING. “The radical construction of horizontal gene transfer envisions high rates of gene transfer even between divergent organisms. If partners for transfer were randomly chosen among different taxa, then no congruent topologies should emerge from different molecular phylogenies.” https://lnkd.in/djKBnru View in LinkedIn

NONRANDOM GENE SHARING. “If partners were chosen nonrandomly, then patterns deduced from molecular phylogenies will reflect propensities for gene transfer rather than vertical inheritance. Ironically, such preferential gene exchange could create many of the very same patterns of similarity and difference we usually attribute to vertical inheritance.” https://lnkd.in/djKBnru View in LinkedIn

LIKELY HORIZONTAL INHERITANCE. “Here, recognized taxonomic categories would be created exclusively through likelihood of horizontal gene transfer.” https://lnkd.in/djKBnru View in LinkedIn

UNLIKELY HORIZONTAL INHERITANCE. “Similarly, lineages that adapt to an ecological niche that decreases horizontal gene transfer will become isolated from their surrounding lineages and will be recovered as deeply branching clades in most molecular phylogenies.” https://lnkd.in/djKBnru View in LinkedIn

RADICAL WORKAROUNDS. “The evolution of a bacteriophage-type RNA polymerase functioning in mitochondria provides an example to show that drastic replacements in the transcription machinery can occur.” https://lnkd.in/djKBnru View in LinkedIn

CASE STUDY. “If one chooses a group of closely related bacteria (e.g., the enterobacteria) and examines phylogenies of genes shared among them, many different genes may re-create the same phylogeny of species (even though recombination can destroy congruence of gene phylogenies within species).” https://lnkd.in/djKBnru View in LinkedIn

BACTERIA CASE STUDY. “Similarly, estimates of horizontal gene transfer based on atypical gene content imply that a minority (albeit a significant minority) of genes arrived into these genomes recently by horizontal gene transfer.” https://lnkd.in/djKBnru View in LinkedIn

MINORITY BACTERIAL HORIZONTAL TRANSFERS. “Yet such results are not inconsistent with horizontal gene transfer having a dominant impact on the evolution of prokaryotic genomes in the long term. Transfers occurring prior to the diversification of a group such as the enterobacteria can only be detected in larger phylogenetic reconstructions.” https://lnkd.in/djKBnru View in LinkedIn

DIFFERENT TIMELINES. “Horizontal gene transfer confounds evolutionary relationships most strongly on broad timescales, whereas vertical inheritance—propagating mutational changes, gene rearrangements, and other intragenomic alterations—and gene exchange by homologous recombination dominate over the short term.” https://lnkd.in/djKBnru View in LinkedIn