Most hunter gatherers eat no tubers.
The diet of Australian Aborigines has been extensively studied by O'Dea. The most detailed information exists for Aborigines of Northwest Australia. During a two-week period, intake of various foodstuffs was measured [O'Dea, 1984]. Animal food contributed to 64% of total energy intake. Main staples were antelope kangaroo (36%), freshwater bream [a fish] (19%), and yams (28%).
Your post is a ton of speculation on your part. You can believe whatever you want but it is a fact that paleo man ate tubers. Obviously every single tribe didn't eat tubers and to argue over the exact diet of our mitochondrial eve is asinine.
the average human has ~3 times more AMY1 copies than chimpanzeesour high- and low-starch samples include both African and Asian populations, suggesting that diet more strongly predicts AMY1 copy number than geographic proximity. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2377015/The gene expresses itself the more starch you eat, where are the sources that say its a recent adaptation? All humans do have them to varying extents.
