Evolution by Inclusion : taking and receiving

In the world of HGT ( the horizontal gifting of genetic material between different strains or species) there is a big but frequently un-remarked difference between symbiogenesis and natural transformation versus conjugation and transduction.

In the first two instances, the receiving being voluntarily took up the foreign DNA itself, either by swallowing a living being whole or by gulping down some of the DNA from a dead or secreting foreign being.

In the latter two cases, an invader forces some foreign DNA upon the receiving being, a situation frequently called 'infectious heredity'.