Model three-dimensional representation of the molecule of deoxyribonucleic acid

摘要

I 1.Modelo dimensional representation of the molecule desoxiribanucleico acid, comprising a rectangular stencil sheet, on which run at least along two parallel oblique stripes, two representative drawn chains succession molecules deoxyribose, one, and phosphoric acid, the other, the chains between two end longitudinal strips, wherein the said chains, by their facing sides, tabs or projections at the points corresponding to carbons where bipletes base is connected, also represented in a provided cardboard two projections or tabs for attachment to two of the projections or tabs for as fixing two of the projections or tabs belonging to said two chain said bipletes, curving template cylindrical, with an axis perpendicular to the end zones cited above, and by joining the free edges pedal , Running chains spiral and being the base bipletes within the cylinder, attached to two of the tabs of the two chains situated at equal height. 2. Model according to claim 1, characterized in that the template consists of an opaque laminar cardboard, being drawn by chains both surfaces in mating position, standing out the entire surface of the cardboard comprised between oblique stripes and end regions defining said areas to the arm the whole upper contour and a lower cylindrical, extending between a series of vertical reinforcing rods, joined to the said helical contours and frank. 3. Model dimensional representation of the molecule of deoxyribonucleic acid.