<p>A New World in Embryo</p> <p>Public Law 10927 was clear and direct. Parents were permitted to watch the genetic alterations of their gametes by skilled surgeons . . . only no one ever requested it.</p> <p>When Lizbeth and Harvey Durant decided to invoke the Law; when Dr. Potter did not rearrange the most unusual genetic structure of their future son, barely an embryo growing in the State's special vat-the consequences of these decisions threatened to be catastrophic.</p> <p>For never before had anyone dared defy the Rulers' decrees . . . and if They found out, it was well known that the price of disobedience was the extermination of the human race . . .</p>