The skull of a chicken embryo (left) has a recognizable beak. But when scientists block the expression of two particular genes, the embryo develops a rounded "snout" (center) that looks something like an alligator's skull (right).
Bhart-Anjan S. Bhullar
New England Patriots quarterback Tom Brady gestures during an event at Salem State University in Salem, Mass. on May 7, 2015. An NFL investigation has found that New England Patriots employees likely deflated footballs and Brady was "at least generally aware" of the rules violations. Now, he faces a four-game suspension and the Patriots a $1 million fine.