This is thanks to AMY2, a gene expressed in the pancreas: This version of amylase gets secreted into the small intestine, where the majority of starch digestion occurs. “So, now the question is: ...

At the optimum temperature the amylase will break down starch very quickly. At low temperatures the amylase will break starch down slowly due to reduced kinetic energy.

More copies mean more salivary amylase, an adaptation from when humans ... More copies meant better starch digestion, helping ...