208 



HEREDITY AND SEX 



cleus divides (G) and each daughter nucleus divides 

 again (H), so that each ex-con jugant has four nuclei. 



Fig. 100. — Diagram to show the history of the micronuclei of two 

 Paramoecia during (A-F) and after (F-J) conjugation. Compare this dia- 

 gram with Fig. 2. 



Another division gives eight nuclei in each. The para- 

 moecium itself next divides — each half gets four nuclei. 

 A second division takes place, and each gets two of 

 the nuclei. Four new individuals result. In each of 



