ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Genetic identity. Conceptual computer artwork of a hand, a fingerprint and a DNA microarray. These represent genetic fingerprinting and genetic identity. A DNA (deoxyribonucleic acid) microarray is used to study thousands of genes at once. It is used to link genetic samples with known genes. The microarray is a large array of possible genes used to test the samples. If any of the samples match genes in the array, they bind to that site to form these coloured dots. The pattern of colours is then analysed. Microarrays can be used to study gene expression or detect mutations. Fingerprints are patterns of ridges on the fingertips. Both DNA and fingerprints are unique to each individual.
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