22.0 MB (3.5 MB compressed)
3500 x 2200 pixels
29.7 x 18.5 cm ⏐ 11.7 x 7.3 in (300dpi)
ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
DNA lettering and a chromosome. Artwork showing the word "DNA" in digital lettering over a sequence of nucleotide bases that makes up the code of DNA (deoxyribonucleic acid). A yellow chromosome is seen in the background. It is the sequence of the four bases that determines the genetic instructions necessary to build a living organism. Here each base is represented by a letter: adenine (a), thymine (t), cytosine (c) and guanine (g). A gene sequence of these bases may characterise one of the many genetic traits in humans such as hair or eye colour. DNA is found in each cell in the form of chromosomes.
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