Just as Deadflie wished... Saturno lectures us on demon life like old times.
Question replies:
izael asks, "As was determined far back in the early chapters when Saturno figured out how melanin worked in the human body to shield from the sun, Saturno and the other demons must have some instinctual ability to determine substances or compositions of cells and chemicals and such. What exactly is this ability and how does it work? Also, to what extent does it work?"
I kinda quit biology as a major three years ago.. I'll do what I can to explain but as a writer talking to a reader.. This is entertainment and science fiction so it can't be explained perfectly without holes.
Here goes. These creatures have unstable DNA, so their bodies have a tenancy to mutate when they eat other creatures. It also corresponds to their weakness to sunlight. UV and other kinds of radiation breaks up their DNA. To SOME extent when some special demons eat Earth creatures there is a chance of gaining some genetic information from the Earth creature into the eater (will be explained more later).
@Deraymou: It has nothing to do with what they look like, it's that they're all researching a different part about humans. Vinchi is researching muscular structure and internal organs, so that's why he looks like he does. Nike is researching clothing, which is why he's always covered in it. Vewnus is researching human beauty, which I believe means she's going at it from an artistic point of view. This would explain why she looks somewhat like a Picasso painting.
As for Alpha, you could say that she is researching human perfection, as that is a possibility, but it might also be that she's not researching anything at all. That hasn't been made clear yet.
Now they've seen real humans and whatnot...
Does Venus have multiple mouths because she wasn't able to transition to more humanoid form from her previous form? OR is it maybe that she thinks she can learn language faster with more mouths?
Also, in Vinchi is the Omega, why does he (arguably) have the most human form aside from Alpha?