I have raised chickens for years but have never really gotten into the whole genetics aspect. We had three or four breeds and if they had offspring we just raised them and harvested the ones we wanted to eat and left the rest to keep laying eggs. My question I guess is how do you cross breeds to achieve a desirable trait? Would any of the following crosses produce a good quality dual purpose bird? Red Sexlink X Barnevelder Delaware X White Brahma Delaware X Cornish Rocks Leghorn X Plymouth Rocks Please bear with me. Never intentionally bred chickens before.