DNA. Molecular model showing a strand of DNA (deoxyribonucleic acid) looped into curves. DNA is composed of two strands twisted into a double helix. E

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DNA. Molecular model showing a strand of DNA (deoxyribonucleic acid) looped into curves. DNA is composed of two strands twisted into a double helix. Each strand consists of an outer sugar-phosphate backbone (red and white) with cross-linking nucleotide bases (blue and white). There are four different bases: guanine, cytosine, thymine and adenine. Guanine always pairs with cytosine and adenine always pairs with thymine. DNA contains sections, called genes, which encode the body's genetic information. Genes determine each cell's structure, function and behaviour.

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Size: 4535px × 4535px
Photo credit: © LAGUNA DESIGN/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

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