SNP genotyping is the measurement of genetic variations of single nucleotide polymorphisms (SNPs) between members of a species. It is a form of genotyping, which is the measurement of more general genetic variation.
On most plays, the center will snap the ball directly into the quarterback's hands. In a shotgun formation, the center snaps the ball to the quarterback lined up several yards behind him.
The Buffalo Bills have an interesting situation brewing at the running back position. With Fred Jackson and C.J. Spiller sustaining injuries, Anthony Dixon is typically the third back on the field.