An easy to assemble DNA model,this stunning recreation consists of specially shaped,brilliantly colored plastic pieces.Each base in the 12 base pair model is a subtly differenct shape,and the sugars are made from a slightly difference plastic so the model fexes correctly to creat a realistic double helix.You can deconstruct the double helix into two separate strands by moving the central supporting spine and pulling the helix apart along the hydrogen bonds.