Page 26 - Just for Middle School Life Science Mini Catalog

241-800-452-1261 FLINNSCI.COMFLINN SCIENTIFIC I GENETICSDNA in Action—Super Value KitDNA is commonly described as a “twisted ladder” or a “double helix,” but these descriptions are very difficult for students to understand and visualize. Now students can build their own DNA model and twist it themselves! After building the basic struc-ture, students can model DNA replication, transcription and translation. Designed for 12 working groups of students. Kit contains more than 2,700 pop beads.FB1223 I $105.40DNA Model KitHow do chromosomes duplicate when cells divide? What directs protein formation? Your students will develop hands-on familiarity with the structure and function of the DNA molecule as they construct and interpret models of DNA segments. Reproducible worksheets also guide the students through a study of messenger RNA (mRNA) and transfer RNA (tRNA) and the process of protein synthesis. FB0521 I $97.80Student DNA Model KitManipulating pieces and seeing what fits together lets students use process of elimi-nation to determine what pieces represent. Students then construct, “unzip” and repli-cate the DNA model in proper form and sequence, learning about translation, tran-scription, protein synthesis and mutations. FB0661 I $61.80DNA ModelThis 3'-long strand of DNA demonstrates its twisted ladder-like arrangement. The ease of twisting and untwisting the large molecule helps students visualize the 3-dimensional structure of DNA. Carefully handmade using flexible vinyl and hard wooden dowels. When completely coiled, the model is less than a foot in length.FB1127 I $81.70MIDDLE SCHOOL LIFE SCIENCEDNA Forensics— Student Laboratory KitStudents become forensic scientists and use biotechnology to solve a crime by analyzing DNA samples from a “crime scene.” DNA samples are run through a gel electrophoresis “maze,” and distinct bands separate—leading to the guilty person. This nonviolent scenario teaches students about DNA electrophoresis! 2 options available at flinnsci.com$106.15–$246.35DNA Replication and Transcription SetBuild a DNA mole-cule and twist it into a double helix with 10 base pairs per helical turn—the same number as real DNA—with this easy-to-assemble system. “Unzip” the model to mimic replication and tran-scription. Deoxyribose sugars, phosphate groups, nucleotides and hydrogen bonds are color-coded. The 521 pieces are stored in a sturdy, stackable storage tray with snap-on lid. Includes comprehensive Teacher’s Guide. FB1890 I $62.50