Word: dna
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Dates: during 1990-1999
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...cells, and you should be able to buck up the entire organism. Still elsewhere, geneticists are beginning to map the very genes that direct us to get old in the first place. After mapping genes, the next logical step is manipulating them, and once you start reweaving the DNA that codes for life itself, anything is theoretically possible...
...genetics to explain the tangles and contingencies of human nature," they consider psychiatric or behavioral genetics the key to unlocking the human essence. In the words of Dr. Malhotra, in reference to the burgeoning field of behavioral genetics: "It's the future. It leads to everything else. Our DNA...
...force the tobacco industry to rethink its argument that no clear connection has been established between smoking and the disease. The research found a tobacco carcinogen called BPDE bonds to three molecular sites on a gene crucial to the development of cancer. The gene, known as P53, monitors DNA copying during cell division and destroys cells with defective copies of genetic material. When BPDE adheres to the gene through cigarette smoking, however, it becomes damaged and cannot eliminate abnormal cells. As a result, cells with incorrect DNA divide and produce cancer. Although BPDE has long been viewed as a possible...
...illustrate complex genetics, Gupta explained the concepts and related them to the movie "Jurassic Park" and popular trials that centered on DNA fingerprinting as evidence...
Scientists are also trying to understand the role of telomerase, an enzyme that regulates growth at the ends of chromosomes. At the tip of every chromosome is a chunk of dna that experts long assumed to be superfluous, since it gets lost in replication. Now they think that piece of dna may be critical in aging, and some speculate that the key to preserving it may lie in preventing the shrinkage of the telomeres that protect chromosome tips from deteriorating...