The stickiness would be the resin the plant is producing and yes how much resin a plant produces is strain specific but it can be increased in all plants by allowing 48 hours of darkness prior to harvest. Hopefully this was helpful and remember ... "Happy Growing and Free your mind one puff at a time".
sticky buds means they produce more Resin you can try the "3 day dark" before Harvest and cold Temperatur in late flowering makes the plant to produce more Resin too but moslty its Genetic