I just thought it was interesting to point out specific genetic expressions that separate an Arabian from another horse. They are all horses, but what is the difference that makes them what they are. You are certainly correct @Dreary that most of us won't know what we are going to have as the end result.
Although to your point about the egg. Most horse breeders sell genetic horse material specifically for breeding in the hopes that those winning race horse genes pass on. The Arabian horse you are trying to buy or breed for is usually pretty well guaranteed if the lineage is strong and you know both parents to be, I suppose purebreeds.
Same with dogs. You wouldn't take your pug to breed with another say champion pug and then be surprised with a collie?
Although to your point about the egg. Most horse breeders sell genetic horse material specifically for breeding in the hopes that those winning race horse genes pass on. The Arabian horse you are trying to buy or breed for is usually pretty well guaranteed if the lineage is strong and you know both parents to be, I suppose purebreeds.
Same with dogs. You wouldn't take your pug to breed with another say champion pug and then be surprised with a collie?