Word: nuclei
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...Human Genome Project will have isolated and identified most or all of the more than 100,000 genes crammed into the human genome, the strand of DNA in the nucleus of each of the body's 100 trillion cells (with the exception of red blood cells, which have no nuclei). And scientists will have sequenced, or placed in order, the 3 billion chemical code letters in that strand, giving them the ability to read nature's complete blueprint for creating a human being. As the project nears completion in the first decade of the next century, knowledge flowing from...
...process along, the center's microsurgeons drilled little holes in the surface of each egg to make an easier journey for Abe's sperm. Of course, the procedure had been a lot more intricate for the lesbian couple who had shown up earlier that spring. In their case, the nuclei from one woman's eggs had been carefully cut out and transplanted into her partner's ova. The resulting fusion created embryos like any other. But because women bear only X sex chromosomes, the "fertilized" eggs gave rise exclusively to girls...
...traced back to a group of organisms known as protists that first appeared some 1.5 billion years ago. (Modern examples include protozoa, giant kelp and malaria parasites.) During periods of starvation, Margulis conjectures, one protist was driven to devour another. Sometimes this cannibalistic meal was incompletely digested, and the nuclei of prey and predator fused. By joining forces, the fused cells were better able to survive adversity, and because they survived, their penchant for union was passed on to their distant descendants...
That specific part is found at the front of the hypothalamus in an area of the brain that is known to help regulate male sexual behavior. Within this site, LeVay looked at four different groupings of cells, technically referred to as the interstitial nuclei of the anterior hypothalamus, or INAH for short. Other researchers had already reported that INAH 2 and 3 were larger in men than in women. LeVay hypothesized that one or both of them might vary with sexual orientation as well...
...Agency, the National Science Foundation and the National Geographic Society, among others, began their first flights to analyze the composition, density and persistence of the smoke. One important question: Does the smoke naturally repel water or, as El-Baz and some other scientists suspect, actually seed clouds by providing nuclei for raindrops...