DNA, Replication and Transcription Set
Build and learn using flexible models that demonstrate phosphate groups, deoxyribose/ribose sugars, color-coded hydrogen bands, 4 codons, and color-coded nucleotides. Builds 7 different DNA and mRNA molecules. Build any 2 of 19 combinations at once. 521 K'NEX pieces, 24-page building instruction book and CD with curriculum guide, all in plastic storage case.