Fancy molecular biology stuff... How technical do you want?
It is effectively a platform for seeing how proteins bind to DNA. That is pretty easy, but we are scaling it up so you can look at how a protein might bind to thousands of bits of DNA all at the same time. It is a technology called ChIP (Chromatin ImmunoPrecipitation) on CHIP (microarray).
Groups are already doing it in biomedical research (within the last couple years), but nobody has tried to develop a chip for farm animals (we use moo-cows).