Human genetics

Sooner or later, one needs to have a good negative or positive control when working with delicate (as the opposite of optimised) protocols. Human DNA seems like a good option and it works great for training purposes. For example, Y chromosome was proven for 2 lab researchers, for a good salmonid karyogram one needs some magic luck. And so when one researcher was isolating DNA from the same two blood samples for the third time, a dozen of his colleagues volunteered. Universality of some mtDNA primers will also be tested.