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This molecular model kit of DNA is really two kits in one. First, it allows students to build a Watson-Crick model of an 8-rung ladder section of DNA, with colored pieces representing the four nucleic acids, hydrogen bonds, phosphates, and deoxyribose sugars.
Students can also build nucleotide models of cytosine, thymine, adenine and guanine. There are enough components to build one nucleotide at a time.
The complete kit contains over 150 components total and includes full instructions for building the DNA models.