224 Charles F. Ehret 



decision occurs at binary fission, during macronuclear development, and possibly 

 intermittently during interphase. In most cells during mitosis the nuclear 

 membrane breaks down, thereby eliminating briefly the important inside-outside 

 relationships imposed by that membrane upon particles of large size. (While 

 Paramecium is an exception in that its macronuclear membrane does not 

 'break down', there is sufficient change to allow for the passage of particles 



A. I ntra-exlranuclear 





(during division) 



fTOBE SYNTHESIZED) TO CONTAIN TO TRANSPORT TO ACT (defined in text) 



^ ■„ N 



(j'^^\ > ■ % \ • » • (between divisions) 



\\. /' (membrane barrier) 



B. Cytoplasmic Organelle Systems 



TO ACT (represents collisions of microsomes-mitochondria) 



TO BEAT 



TOPOLARIZEJi i • # TO SCAN 



TO ANCHOR 



(represents linked 

 TO LINK kj" ^ Y ^TOLI^Kkj-r PeHide-kineties) 



TO PACK ^\ TO HOLD OPEN; TO LINK kj,., 



TOLINKkj(#^ # TO SWEEP 



(represents kinety) i TO FORMIC 



(represents gullet system) 



Fig. 3. Partial primordial graphs for organelles in Paramecium. A. Organelles 



engaged in communications between nucleus and cytoplasm and in construction 



of complexes and systems of organelles. B. Organelles engaged in systems for 



feeding, for locomotion and for structural integration. 



up to 1 // in diameter during fission (15).) The first function of the primary 

 organelle is to contain the message introduced presumably by the chromosomal 

 genes at time of nucleolar synthesis. Its next function is to move and to transport; 

 the function shown in the figure is to move 'out of the nucleus; this is followed 

 by to act (collide, fuse, develop), an accomplishment in which the message and 

 its vehicle are also partial power supply and building stone to make cilium, 

 trichocyst, mitochondrion, or whatever is dictated by uncertainty loss. The 

 decision tree (Fig. 2) is itself a partial primordial graph representing the 

 diversity of these acts. 



The cytoplasmic organelle system (Fig. 3b) operates through similarly gross 

 functions. The function of a pellicle unit is to beat (row, propel), to pack (to fit 

 as a block in the pellicle wall), and to link similar units longitudinally (k^) and 

 latitudinally {k,)\ a column of such units (one kinety) is aligned with directional 

 reference to each of its ciliary bases (kinetosome) and basal fibrils (kinetodesma); 

 each kinetodesmal fibril lies to the right of its kinetosome; and each is over- 

 lapped by and in turn overlaps two or three of the fibrils antero-posteriorly 



