I would bet money you were watching a show set in Texas. They live and breathe management hunts and cull bucks down there. As a former geneticist, I've tried to talk genetics with my brother-in-law and others on his lease in South Texas. I love him to death, but you might as well be talking to a brick wall. SO much more goes into antler size than a buck's DNA. As others have said, does carry half of the genes that get passed on and I was recently made aware of a study that suggests does are as much responsible for a buck's antler size as the buck she breeds with. And then there are all of the environmental conditions (food, water, stress, drought, disease, etc.) that come into play with the overall health of the buck.