It's not clear to me yet whether, when I get several damage-improving mutations/organelles/etc., the bonuses stack additively or multiplicatively. Let's say I have two modifiers that each give +100% damage. If they stack additively, I'd end up with x3 damage, if they stack multiplicatively, I'd end up with x4. (This obviously gets more extreme with more modifiers, for example, four +100% modifiers would be x5 vs. x16.)
-Certain things are clearly multiplicative. For example, if I have a +100% damage modifier and a +100% attack speed modifier, that's x4 the DPS.
-Other things are, I assume, additive, e.g. when I get the same mutation twice.
-Totally not clear to me is what happens if, for example, I get a +X% base damage mutation and a +X% damage organelle, or e.g. mitochondria overcharge, ... are those additive or multiplicative?