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DNA microarray and double helix

DNA microarray and double helix

G210/0910

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Credit

ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY

Caption

DNA microarray and double helix, illustration. DNA (deoxyribonucleic acid) microarray technology allows biologists to study thousands of genes at once. An array of DNA sequences for a particular set of genes is created, fixed to a supporting slide or chip. Samples of genetic material are then labelled with fluorescent markers and added to the chip. The genetic material in the samples binds to sites on the array which have a matching (complementary) sequence, producing a pattern for analysis (lower right). Above is seen the double helix structure of DNA that enables the complementary binding. It comprises a sugar-phosphate backbone and paired bases.

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Model release not required. Property release not required.

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