I've grown out the original Urkle and several crosses and never seen a herm plant. I've also run a lot of trainwreck and never seen a ball or nanner. They're just strains that are known to be herm prone. Possibly because they both come from herm plants lol. It seems like a lot of the cannaventure fem line are herming pretty regularly late in flower though, so that could just be increasing the tendencies.
But it's been my experience growing where a lot of growers get herms, I have seem to have avoided them. May just be my grow environment, but I've only had 3 plants/strains herm on me ever. A blue dream fem bean, a sour grapes fem bean, and now two cannaventure cookie wreck fem beans(one hermed week 8, the other was a straight male). I've run a lot of Cali cons gear, trainwreck, Urkle, and now ihg gear and not a single herm from any of those, but if you start reading through their thread on here you will see all of the reports of herms kind of rampant. Not to say that the instability isn't bred into them by breeders who don't know what they're doing, but a lot of the most desirable strains come with some part of their genes lacking quite a bit in some sense while excelling in others. Kinda like Einstein.
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