Word: geneticists
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...rolling in on the cornea GERMAN SHEPHERDS: Hip dysplasia, which can bring on crippling arthritis, causes problems for this breed IRISH SETTERS: They should be screened for hip dysplasia and also for progressive retinal atrophy, an incurable inherited eye disease that gradually leads to blindness says Geoff Sampson, a geneticist who works for the Kennel Club. But that kind of judging has too often been unrewarding for the dog. In the quest to create the perfect pooch, close relatives will often be mated, sometimes even brother and sister or mother and son. The danger of this practice is that...
...thinking. Most scientists stress that everything from brain architecture to environment help determine sexuality. While gays may be able to swear off one kind of sex and grimly slog away at another, that doesn't alter their basic orientation. "It's possible to change almost any human behavior," says geneticist Dean Hamer of the National Institutes of Health. "But changing the underlying mechanism is a different matter." A study presented at the same convention addressed the same topic and found that of 202 homosexuals who sought to change, 178 failed. Spitzer stands by his findings and insists they should never...
...saliva - used in the most recent studies is still too small to give a full picture of genetic variation. Others harbor doubts that the rate of mutation of mitochondrial DNA is constant enough to support conclusions about chronological dating. "Physical anthropology remains the gold standard for dating," says geneticist Mark Stoneking of the Max Planck Institute for Evolutionary Anthropology in Leipzig, a member of the team at the University of California, Berkeley that in 1987 identified "Mitochondrial Eve" as the 140,000- to 280,000-year-old ancestor of all living humans. "But we're getting better at genetic dating...
Helping animals into the future is a priority for the world's wildlife researchers as an ever growing number of species become imperiled each year. Oliver Ryder, a geneticist at the San Diego Zoo's Center for Reproduction of Endangered Species, is the driving force behind a 25-year effort to assemble a bank of frozen dna, eggs and sperm from endangered species. Under his direction, the frozen zoo now has living cells from 5,400 animals spanning more than 400 species and subspecies, cultured and frozen in liquid nitrogen...
...Collins, formerly a medical geneticist at the University of Michigan, the effort to map and sequence the human genome ranks as one of humankind's noblest endeavors. It dismays him, he says, to see the importance of the enterprise besmirched by the continuing focus on such tawdry matters as the rivalry that developed between him and Venter. In an effort to heal that breach, Collins now says that he considers Venter to have "been a stimulant in a very positive way." At the same time, he acknowledges, "we'll never find ourselves going out for a beer on Friday nights...