Theo, you are so very right. There's so much we don't know about genetics. One of the most incredible things is that genetics are often not controlled by the genes! It now appears that messenger RNA controls much of the expression of the genes.
In case any one thinks that this is technical stuff way beyond any normal persons thinking, it is not. Pure bred breeders of almost any sort of animal know and use this stuff all the time. They can tell you about line breeding, out-crossing, dominants, recessives, sex-linked and much much more. A $2,000 dog becomes a give-a-way if you don't know this stuff.
