In one embodiment of the invention, the first step in “crossing” comprises planting, often in pollinating proximity, {HEAD ~ seeds} of {TAIL ~ a first and second parent corn plant}, and in many cases, seeds of a first corn plant and a second, distinct corn plant 
In one embodiment of the invention , the first step in “ crossing ” comprises planting , often in pollinating proximity , { HEAD ~ seeds } of { TAIL ~ a first and second parent corn plant } , and in many cases , seeds of a first corn plant and a second , distinct corn plant
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH