Word: geneses
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Donna Mitchell was told her daughter, eight-year-old Sawateos, had attention-deficit hyperactivity disorder, but she also showed signs of serious depression and anxiety, which are often found in combination. Mitchell's first reaction was, "I can pray this away. I thought, Listen, nobody in my family is going...
In a study published in Nature, Cornell entomologist John Losey and his colleagues reported that pollen from corn made pest-resistant by the addition of bacterial genes could spell trouble for monarchs. In his experiments, Losey scattered pollen from the genetically modified corn onto milkweed--the butterfly's only food...
Approved by the Environmental Protection Agency in 1996, so-called Bt corn has become enormously popular with farmers, and now accounts for up to 25% of the U.S. corn crop, or about 20 million acres. By splicing DNA from the common soil bacterium Bacillus thuringiensis into the corn's genes...
But such tinkering can go awry. As even their proponents concede, spliced genes, like any other genes, can be picked up by wild species. The fear is that they will create what geneticist Norm Ellstrand of the University of California at Riverside, calls "a weedier weed"--a species, such as...
That episode, like the flap over Jefferson and Hemings, is a reminder that in a country with so many mixed-up genes, telling who's "black" and who's "white" isn't always easy. Black folks play a game called Name That Negro, in which we try to guess which...