I look at Cannabis from many different perspectives, one of which is from the scientist in me. Genetics fascinate me but as I research all the different strains available and there linage/family tree. I wonder first how much data is correct, but right now as I develop my own pool of genetics the big debate that roars in my head is what strains have had the biggest impact in the last 100 years to the worlds current Gene pool of cannabis. Please share I'm very interested to hear from the growing community and not just whats published in a book. Me personally with only 2 crosses under my belt and it was of different phenos of afgani I really like. 1 big reason is its pre disposition to show purples and blues when exposed to colder temps. Anyone else have a thought on biggest contribution to modern day cannabis plants.