Word: markered
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Dates: during 1990-1999
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...Khandan Keyomarsi is the principal author of the paper titled, "Cyclin E, a Potential Prognostic Marker in Breast Cancer," which outlines a potential method to detect the cancer in the early stages...
...grader. The true master of a generality is the man who can write a 10-page essay, which means nothing at all to him, and have it mean a great deal to anyone who reads it. The generality writer banks on the knowledge possessed by the grader, hoping the marker will read things into his essay...
Even if there were a gene for, say, criminal activity, what would society do about it? Gregory Carey, a behavior geneticist at the University of Colorado, points out that "we already have a true genetic marker, detectable before birth, that predicts violence." The individuals with this genotype, he says, are nine times as likely to get arrested and convicted for a violent act as people without the genes. He asks, "Do you know the high-risk marker I'm talking about? That's right: being male...
Composed of long chains of DNA containing perhaps 100,000 genes, the human genome is far too vast to analyze all at once. So scientists use special enzymes to chop the chromosomes into small manageable pieces and pick out small identifiable stretches -- called markers -- on each segment. When researchers are searching for a disease gene, they look for a marker that is common to all people who suffer from that ailment. If one is found, then the defective gene is probably located somewhere near that marker. The problem is that although the gene hunters know where the marker is located...
Cohen's laboratory now has in storage multiple copies, or clones, of about 33,000 chromosome segments. So if gene hunters want to search the area around a particular marker, they can request copies of the relevant DNA segments. Says Cohen: "You can call and say, 'I need this and this clone,' and you'll get it in two days...