GENETIC CONTIXriTY OF KIXETIES 45 



the conclusion tliat the fate of kinetosomes is controlled 

 by the underlying cytoplasm. Hut this conclusion is not a 

 contradiction of the fact that some kinetics are endowed 



Fig. 16. Chromidina elegans: protomites. Formation of the oral cilia- 



ture by division of the kinctosome of kinety 1. The oral ciliature is 



totally absent in the trophont and in the tomont. 



with genetical continuity by elongation. This means that 

 more or less autonomous, self-perpetuating populations of 

 kinetosomes formed by spontaneous mutations may be seg- 

 regated in different meridians of the organism. And as con- 



