AFAIK, angels/demons are spirits with no bodies and therefore no DNA.
Demons inhabit human bodies, but any mating that occurred would simply pass on the DNA of the inhabited body, no?
In reality we don’t know really what sorts of powers angels are capable of exuding or forms that they can take on or if in their possession of humans, they can attempt to manipulate their hosts’ DNA.
Many so called UFO “abductees” report that their captors tended to be sneering and dismissive towards them, referring to them as “containers” as though they were empty vessels. (The import of that reference of being as ‘containers’ is of import when reading in the Bible of Jesus casting out devils.)
Some potential abductees report that these “captor”s tended not to like it when Jesus Christ is mentioned and spiritual songs are sung, even voicelessly and thus these folks, Christians of faith, are released abruptly!
“AFAIK, angels/demons are spirits with no bodies and therefore no DNA.
Demons inhabit human bodies, but any mating that occurred would simply pass on the DNA of the inhabited body, no?”
There’s really no way of knowing, from the text, if the offspring was produced through physical copulation, or some other means. After all, we know that stuff like genetic engineering and artificial insemination are possible now, so there is no reason to assume that angels, with much greater knowledge of the workings of the universe, would not have known about them or been able to use them.