By ancestors, I mean entities and things that affected it and what it is. By offspring, I mean the opposite - things that it affected and molded.
I thought of "spiderweb," but this would be referring to the center of the web, and it doesn't really express the above but more so just very connected.
Rephrased: I am looking for a way to represent an idea that is very pervasive but also is a culmination of many other ideas.
One example from the past might be astronomy and telescopes. It stems from the mythical stories of the Greeks and Romans in naming constellations as well as astrology. That's the "emotional" side of astronomy, essentially a religious basis. It also comes from mathematics and geometry, which finally proved things like the curvature of the earth, its position in space, orbital periods, etc - the technical side. When I said "offspring," that applies here in the sense that there are many results because of astronomy, such as space travel, GPS, photography, etc.
Another example could be electricity. It began with physics experimentation, the technical side, and an inspirational battle between Nikola Tesla (who wanted to make electricity free) and Thomas Edison (who wanted to commercialize it), which is the non-technical "dreamy" side. Today, electricity has pervaded almost everything - that is the "offspring", I don't think that needs to be explained.