Word: proteins
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Even more remarkable, each of the four bases represents a letter in the genetic code. The three-letter "words" they spell, reading in sequence along either side of the ladder, are instructions to the cell on how to assemble amino acids into the proteins essential to the structure and life of its host. Each complete DNA "sentence" is a gene, a discrete segment of the DNA string responsible for ordering the production of a specific protein...
...identifying the kind of human protein each of these hybrid cells produced, the researchers could deduce that the gene responsible for that protein resided in the surviving chromosome. Using this method, they assigned hundreds of genes to specific chromosomes...
...astronauts also will conduct experiments to determine the effects of weightlessness on plant cell division, the growth of protein crystals and the development of chicken embryos...
...difficult will it be for the U.S. to meet these goals? Americans are now on target for protein. But they still need to raise carbohydrates and lower total fats and saturated fats, salt and alcohol. Men now consume 45% more cholesterol than recommended...
...same time, travelers are taking matters into their own hands. Some have discovered the "special meals" that can be ordered in advance and at least stand a chance of being fresher and better prepared. The major carriers offer as many as 18 alternative menus, including kosher, Hindu, vegetarian, high protein, no salt, low calorie, low cholesterol, diabetic and children's. American's seafood plate is particularly popular among veteran flyers. Special meals cost the companies more because they require special handling and are not mass produced. Says San Francisco businessman David Kliman: "It allows me to choose what...