Word: nuclei
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Dates: during 1970-1979
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...conservatively dressed man with graying hair strode unflinchingly to the target area of one of the world's most powerful nuclear particle accelerators last week and donned a molded plastic mask. At a signal, the accelerator beam was switched on, and nitrogen nuclei, traveling at almost the speed of light, flashed into his temple through a hole in the mask. At first nothing happened, even though the beam struck his optic nerve, behind the retina. For the next pulse, however, his head was moved so that the beam passed through his retina. "Hey, there's one!" he shouted...
...thought I knew a lot of things: of enzymes and mutation, Of cells, the nuclei, RH-electrodes and gestation. But now there's double helix, DNA and ribosomes, With biological syntliesis-and not just one's chromosomes. Instead of simple worries, such as merely being stoned, I've got to face a future now in which I may get cloned. Alas Homo futurus! There's lots more to learn, it seems. I thought one told the boys from girls by lowering their genes...
...ideas were so unorthodox that they were ignored for 35 years. But by the time the Mendelian concept was rediscovered at the turn of the century, scientists were better prepared for it. They already suspected that genetic information was hidden inside pairs of tiny, threadlike strands in cell nuclei called chromosomes, or colored bodies (for their ability to pick up dyes). During cell division they always split lengthwise, thereby giving each daughter cell a full share of what was presumed to be hereditary material...
...crossbreeding experiments with the fruit fly Drosophila melanogaster, Morgan and his students were able to map the relative positions of the genes along the insect's four pairs of chromosomes. Still, the gene's physical nature remained as great a mystery as ever. DNA had been discovered in the nuclei of cells by the Swiss biochemist Friedrich Miescher a few years after Mendel did his work on peas. But since the chromosomes in which the DNA was found also contained proteins?the basic building blocks of life?few scientists had any inkling that DNA might be playing an even more...
Thriving on Smog. How could minute plants live in a cloud? Many of them, Parker decided, are large enough to act as nuclei for slowly condensing droplets of water-an essential ingredient for all earthly life. The tiny organisms also have an amazingly varied diet available even in unpolluted clouds: oxygen, nitrogen, carbon dioxide, ammonium, nitrogen oxides, sulfur dioxide, carbon monoxide, methane, butane and acetone. Such necessary minerals as potassium, phosphorus, calcium, iron and magnesium could be transported to the clouds in airborne soil and dust particles...