I am currently getting my head around some concepts regarding horizontal gene transfer. The following paper looked at recombinational events and have identified an "x" number of gene transfers:
They then address that a big proportion of the recombination breakpoints corresponds to "gene borders," suggesting that both inter and intra species recombination take place.
My question is that what does a "gene border" mean in this sense? Does it relate to sequences bordering homologies to two different species in nucleotide sequences?
Thank you so much
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