26.3 MB (874.6 KB compressed)
3508 x 2620 pixels
29.7 x 22.1 cm ⏐ 11.7 x 8.7 in (300dpi)
KENNETH EWARD / BIOGRAFX / SCIENCE PHOTO LIBRARY KENNETH EWARD / BIOGRAFX / SCIENCE PHOTO LIBRARY
DNA can assume many shapes, the Watson-Crick B form being its most typical. The E form pictured is a stretched, eccentric variation caused by the insertion of small molecules such as methyl groups (starburst at center) into the double helix.
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