I guess if certain particles essential to matter as we know it are either particles or anti-particles, and if matter coalesced several times independently, we s

I guess if certain particles essential to matter as we know it are either particles or anti-particles, and if matter coalesced several times independently, we should see both types of matter ;) The main difference between particles/antiparticles and chirality, though, is life tends to extinguish other life in its competition for replication. Antiparticles just tend to annihilate 1:1.