"... I started to contact other grape geneticists in labs all over the world—initially 10 or 15 different research groups in France, Italy, Germany, Spain, Australia, New Zealand, Chile, South Africa—and proposed that we form a consortium to develop these s. Each lab would try to develop a few markers and then contribute those markers to the general pool that we would share. We formed the . After a couple of years we had developed several hundred markers. We were able to make some interesting discoveries by just using a couple of dozen markers, because that is enough to prove statistically whether one variety is related to another variety. But once several hundred markers existed it was then possible to develop a of grape, a project that was really just starting around the time that I retired from . The highlight of my career was using these s to reveal genetic relationships among classic s and to then elucidate from that something about the ."