In their quiet, back-room study of the secrets of heredity, U.S. geneticists are developing many a technique as explosive as any nuclear physicist's dream. Last week, at somber meetings in separate cities, two geneticists brought current accomplishments and prospects into the open:
ΒΆ Defective human genes, lab-mixed with healthy genetic material, may some day be artificially inseminated to produce normal individuals, said Johns Hopkins Biologist Bentley Glass in a Michigan State University lecture. Children's sex may one day be pre-ordered by a lab device that electrically separates the two types of sperm. "The great advances already made," said...