Description The genome of an organism consists of complementary pairs of enormously long polynucleotides wound around each other in the form of a double helix. Through study, students will know the difference single-stranded and double-stranded, and why the DNA is more stable than RNA. Features - Color: As shown. - Material: ABS. - Size: 18.00X13.50X1.00cm/7.07X5.31X0.39 inch. - In a double-stranded DNA molecule, A=T, G=C. That is: A + G = T + C or A + C = T + G. - Self-assembling suite can exercise child's concentration and mental concentration, delivers more fun opportunity. - Interlocking pieces connect to form the double helix shape and show how molecules split at the center of the base pairs. - It is an intuitive teaching aid suitable for teaching basic DNA double helix and biology courses in middle schools. - Make learning come alive and build creativity with this hands-on and interactive science kit!Package list: 1 x DNA Model