Source:http://linkedlifedata.com/resource/umls/id/C1160186
GO: The process of unidirectional (polarized) transfer of genetic information involving direct cellular contact between a donor and recipient cell; the contact is followed by the formation of a cellular bridge that physically connects the cells; some or all of the chromosome(s) of one cell ('male') is then transferred into the other cell ('female'); unidirectional conjugation occurs between cells of different mating types. Examples of this process are found in Prokaryotes. [ISBN:0387520546]