Set includes 521 K'NEX Rods and Connectors and a 24 page full color building instruction booklet. Builds 11 DNA and mRNA molecules. Build any one from 19 combinations at once. Wonderfully flexible set allows students to build and learn using models that demonstrate phosphate groups, deoxyribose/ribose sugars, color-coded hydrogen bonds, four codons and color coded nucleotides. Set supports two students working as a team. K'NEX DNA Replication & Transcription - Theme/Subject: Learning - Skill Learning: DNA - 511 Pieces
