Word: dna
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Through a collaboration between the Department of Chemistry and Chemical Biology and the Department of Molecular and Cellular Biology, researchers were able to take a snapshot of a stage of the mechanism by which the enzyme reverse transcriptase (RT) works on a strand of viral DNA to make new copies...
According to Harrison, when HIV enters a human cell, it uses RT and RNA to form a new strand of viral DNA. Then this strand is used to make another one,which when joined with the first, forms the fameddouble helix...
...ignore. Diane Redman, a Madison Hemings descendant who lives in Columbus, recalls looking at family pictures from the 1920s, '30s and '40s, with her parents ruefully pointing out relatives who had passed. Indeed, passing is the reason Madison's link to Jefferson cannot be genetically confirmed. Establishing a DNA link requires a continuous male line; but of Madison's three sons, one died childless and the other two disappeared, passing for white...
...branches are embracing, making plans to hold a joint family reunion. They've been received less warmly by the Monticello Association, the organization of descendants of Jefferson's white daughters. For years they asserted the Hemings children were sired by one of Jefferson's wayward nephews. Now that the DNA tests have eliminated that possibility, they are suggesting there were other male Jeffersons who could have fathered Hemings' children. Jefferson biographer Joseph Ellis discounts this, saying circumstances bolster Madison's link to Jefferson and even call into question the nullification of the Thomas lineage. At any rate, the clan...
...suspiciously professional). The round, bald Cooper suggested that Al Gore might try to copy Bill Clinton's formula for success and have an affair, then dismissed it with a riff on the media's skeptical reaction. "How do we know?" he had scornful reporters saying. "There's no DNA on the dress! Prove it!" Alone among the contestants, Cooper could do passably good imitations, including of Clinton and Gore as teenagers smoking pot. "C'mon," the easygoing Clinton says. "Let's get some pizza and listen to Eat a Peach." To which the uptight Gore responds, "I am freaking...