dahjah..as much as i love dub reggae and would love to give it all the glory, dubstep's relation to reggae is somewhat non-linear. It's signature sounds aka the notorius wobble bass (disclaimer..longtime fans know dubstep is much more than wobble) was handed down from drum and bass. It's rhythm was derived from two-step garage. Mind you, drum and bass came from jungle which was t osome degree a bastard child of techno and dub reggae. I'm not saying dubstep is not related to reggae dub but it is more like a quadroon than mulatto and defintaly not a full blooded descendent (never thought i would use outdated racial classifications to describe music). Also, if you listen closely, dubstep is actually 140 bpm with many elements played in halftime. I know that sounds like splitting hairs, but it makes a big difference when actually producing.