LI AND LENHOFF 



445 



0.6 f- 



0.5 



± 0.4 



LlI 



\- 



o 

 q: 



^ 0.3 

 < 



Q 



0.2 - 



0. 



^h 



72 120 144 



LT P B P B 



HOURS AFTER FEEDING 



Fig. 4. DNA protein ratio of long tentacled stage Hydra (LT) before and 

 after the buds detached. P and B represent parents and buds. Ten animals 

 are used in each experiment. 



indicate that a high DNA protein ratio is a property of bud tissue in 

 its early development. It is also possible, although less likely, that 

 the high DNA values in bud tissues actually represent large pools 

 of diphenylamine-positive material which serve as precursors for 

 DNA synthesis. 



The chemical changes occurring in buds fed until they reach 



