Word: strand
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Here--in the "complementarity" between A and T, between C and G--lay the key to replication. In the double helix, a single strand of genetic alphabet--say, CAT--is paired, rung by rung, with its complementary strand, GTA. When the helix unzips, the complementary strand becomes a template; its G, T and A bases naturally attract bases that amount to a carbon copy of the original strand, CAT. A new double helix has been built...
...every A, C, G and T of the hereditary alphabet--into a computer. Then, still using the computer, you figure out what the mirror image of each sequence would be. (DNA can mirror itself as well as RNA.) The aim is to transform the mirror-sequence data into actual strands of DNA that are planted like rows of corn on the glass bed of a chip. Each strand is built up, letter by letter, in much the same way the layers in a silicon chip are created...
...ignores Moses and Aaron, crediting the Lord, who straightforwardly "drove back the sea with a strong east wind all that night, and turned the sea into dry ground," and the Israelites don't even cross the sea; they just watch as the Egyptians are overwhelmed by it. The strand called P bolsters the priestly role, providing the familiar image of Moses parting the waters and bringing them back together in a deadly rush with his outstretched arm. Before the miracle, as the Israelites saw Pharaoh's warriors bearing down on them, they had asked Moses, "Was it for want...
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...
Researchers pinpointed a moment in the encodingof the second strand of viral DNA at which one newbuilding block of DNA, known as a nucleotide, isadded...