Category: Biological models

(Deoxyribonucleic acid) Model showing segment of D.N.A. molecule mechanism of replication, to show the double helix coiling and reforming, nucleiotides and the structural formula to show the molecular shapes and bonds and angles distorted. Complete model arranged on a board, fully labelled. Overall dimensions 610 x 455 x 65 mm.approx.

Both Internal & External Structure with Key Card, Mounted on Suitable Base.

A longitudinal section showing detailed structure of the body wall, nematocysts, hypostome, mouth, tentacles and gastro vascular cavity. Also showing the testes, ovary and a portion of tentacle in T.S. An accurate and three dimensional model mounted on stand, with key card. Overall dimensions 370 x 235 x 580 mm.approx.

(Ribonucleic acid) Model showing R.N.A. molecule, D.N.A. Template molecule of chromosome, role of messenger and transfer R.N.A. colour key and structural formula. The complete model arranged on board, fully labelled. Overall dimensions 610 x 455 x 65 mm.approx.

Showing details of internal structure of a typical monocot leaf, mounted on board, with key card. Overall dimensions 420 x 250 x 60 mm.approx.

Stages Multiple of 2, Showing All Basis Developments of Stem, Ovary, Leaf & Seed.