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TEXTBOOK OF ZOOLOGY 



Fig. 40. — Conjugation and subsequent divisions in Paramecium, showing activi- 

 ties of the micronucleus. Circles are micronuclei and crescents are macronuclei. 

 The shaded ones have been resorbed. The divisions for micronuclei actually occur 

 within the cells instead of outside, as figured for convenience. (From "White, 

 treneral Biology.) 



