Source: Garland Science/Taylor and Francis Books, Inc. In this
animation adapted from Garland Science Publishing, a detailed
look at DNA reveals the structural features that make up the
famed double-helix molecule. The animation shows how the ladder-
shaped DNA is constructed from chemical building blocks,
including phosphates, sugars, and bases, held together by
different kinds of chemical bonds. The narration further
explains how the overall structure determines the charge and
stability of the molecule, and how structure predicts key
cellular functions of replication and transcription. Every
living thing contains building and operating instructions from a
molecule inside all cells called deoxyribonucleic acid (DNA).
DNA contains regions called genes that tell the cells which
proteins to produce. At all levels of organization in the living
world, structure and function are related. Thanks to the work of
many researchers using different technologies, scientists now
understand the structure and function of DNA