FERTILIZATION 



199 



Fig. 114. Some stages in syngamy in Crepis capillaris. A, portion of egg nucleus 

 with sperm lying on nuclear membrance. B, uncoiling of sperm nucleus, showing 

 dual bead-like appearance at some places. C, D, entry of sperm nucleus inside 

 nuclear membrane of egg. E-I, a gradual disintegration of the sperm thread and 

 appearance of its nucleolus. J, K, intermingling of contents of male and female 

 nuclei. L, later stage, showing fusion of the two nucleoli. (After Gerassimova, 

 1933.) 



