The genome of an 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:Multi -Material:Plastic - Size: 40.00X5.70X2.00cm/15.72X2.24X0.79in - Constructed by using plastic material, ensures DNA model safety and can use it with confidence. - The molecular model kit can be removed and separated for further examination. - The DNA perfect and wonderful for students and biology lovers to explore molecular world. - It make learning come alive and build creativity with this interactive science science educational toy. - The wonderful craftsmanship and simple design will ensure DNA model practicability and popularity. Package list: 10 x sets of Double Helix DNA Model