Cool! I like your gravitation weapon design. A genetic weapon is a genetically engineered virus. They probabely already exist. These are created by genetically modifying something benign (the first novel to have such a weapon is "Mount Dragon" where the common flu was turned into a virus that no immune system could comat) or by creating a completely new one (my own personal theory) by constructing its genetic code from scratch. In mine it is the latter.
No, the gravitation weapon was something I heard of on a movie, or such My design is the superbomb. (40GT. in a size small enough to fit in a truck)
SO, then, this is a "killer virus", kind of like in the old (good) movie, "the satan bug"?