Alright, this has been bugging me for the last few days. One of my bots mutated their repro dna:
.repro 32000 rnd mult inc
by adding a >> (right bit shift) before the inc.
there's nothing before the .repro command, so it is basically functioning as a 2 div.
The question is what's so useful about it that it's been conserved across the whole species for the last few days. I've looked at all the multiples of 150 and only 300, 450 and 900 look they actually do something.