DNA double helix
Or something similar. The horizontal sections would be base pairs, the yellow pentagons would be deoxyribose rings, and the green tetrahedra would be phosphate groups:
DNA double helix, version 2, view 1
1990 pieces: 512 balls, 1205 rods, 26 pentagons, 247 squares (10.59 kg) 
|
DNA double helix, version 2, view 2
|
Each turn of the double helix is made of ten modules (nucleotid pairs). In the following table, we give the piece quantities required for several numbers of modules:
|
|
modules
|
balls
|
rods
|
pentagons
|
squares
|
|
5
|
192
|
445
|
10
|
95
|
|
6
|
232
|
540
|
12
|
114
|
|
7
|
272
|
635
|
14
|
133
|
|
8
|
312
|
730
|
16
|
152
|
|
9
|
352
|
825
|
18
|
171
|
|
10
|
392
|
920
|
20
|
190
|
|
11
|
432
|
1015
|
22
|
209
|
|
12
|
472
|
1110
|
24
|
228
|
|
13
|
512
|
1205
|
26
|
247
|
|
14
|
552
|
1300
|
28
|
266
|
|
15
|
592
|
1395
|
30
|
285
|
|
16
|
632
|
1490
|
32
|
304
|
|
17
|
672
|
1585
|
34
|
323
|
|
18
|
712
|
1680
|
36
|
342
|
|
19
|
752
|
1775
|
38
|
361
|
|
20
|
792
|
1870
|
40
|
380
|
|
...
|
...
|
...
|
...
|
...
|
|
n
|
40 × n 8
|
95 × n 30
|
2 × n
|
19 × n
|
DNA double helix, version 2, oblique top view
|
In this previous version each helix is of a different color and their chemical structure is not represented:
DNA double helix, version 1, view 1
1866 pieces: 462 balls, 1131 rods, 26 pentagons, 247 squares (9.82 kg) 
|
DNA double helix, version 1, view 2
|
Required piece quantities:
|
|
modules
|
balls
|
rods
|
pentagons
|
squares
|
|
5
|
174
|
419
|
10
|
95
|
|
6
|
210
|
508
|
12
|
114
|
|
7
|
246
|
597
|
14
|
133
|
|
8
|
282
|
686
|
16
|
152
|
|
9
|
318
|
775
|
18
|
171
|
|
10
|
354
|
864
|
20
|
190
|
|
11
|
390
|
953
|
22
|
209
|
|
12
|
426
|
1042
|
24
|
228
|
|
13
|
462
|
1131
|
26
|
247
|
|
14
|
498
|
1220
|
28
|
266
|
|
15
|
534
|
1309
|
30
|
285
|
|
16
|
570
|
1398
|
32
|
304
|
|
17
|
606
|
1487
|
34
|
323
|
|
18
|
642
|
1576
|
36
|
342
|
|
19
|
678
|
1665
|
38
|
361
|
|
20
|
714
|
1754
|
40
|
380
|
|
...
|
...
|
...
|
...
|
...
|
|
n
|
36 × n 6
|
89 × n 26
|
2 × n
|
19 × n
|
DNA double helix, version 1, oblique top view
|
-
More helical structures in Helices.