This is taken from Kip Adams from QDMA and it is referring to the study I mentioned.
"Let's revisit the research projects. The results from Dr. Mickey Hellickson's recent culling study in South Texas are likely the most applicable to the average deer manager because of the intensity of the culling efforts and the size of the study area. Mickey and his colleagues intensively culled the smallest antlered bucks in all age classes for six straight years on 10,000 acres on the King Ranch in Texas. When the study was over, the average antler quality per age class was slightly SMALLER than when they started! While factors such as yearling buck dispersal off the study area could partially account for lack of impact, it clearly suggests that even intensive culling on this scale is unlikely to impact genetics.
So, should we be culling "inferior" bucks? If they are young bucks, the answer is "no" for most of the whitetail's range because they may have been born late or have been nutritionally deprived. If they are older bucks, the answer depends. If you have a surplus of bucks and you really dislike a certain buck regardless of age - then go ahead and cull him. However, don't expect it to make a big difference in what you see for antlers in the future. He's likely not siring a lot of fawns and of the ones he sires, the doe contributes half to their offspring's antler quality."
In my opinion it doesn't work and is not necessary. If you have a good ridge on your property thats perfect for hunting and you got an old 6 pt running all other bucks off of it I would suggest taking that deer out of there but not because your saving potential gene pools.
Genesis 27:3 Take your bow and quiver full of arrows out into the open country, and hunt some wild game.....