SPE RMflTOG E N ESIS 



OOGENESIS 



Dl SOME 



NUCLEUS BEGINS TO 

 ENLARGE 



GOLGI MATERIAL DISPERSED 

 MITOCHONDRIA 



ARG ING NUCLE US 

 ^ ARI ZE D AT ONE SIDE 

 OF OOCYTE 



GOLGI POSSIBLY 

 CONCERNED WITH ORIGIN 

 OF FAT DROPLETS 



MITOCHONDRIA BECOME 



ISPERSEO IN CYTOPLASM 



D IN FORMING YOLK 



GERMfNAL VESICLE 



ANTERIOR 



C E N T R lOLES 

 MITOCHONDRI 

 POSTERIOR 



■ CENTRIOLE' 

 GOLG I SU B STAN ( 

 AND CYT OPL AS M 

 DISCARDED 



AXIAL FILAME 



THES E 

 SURROU N D 

 NUC LE US 



DISCARDED 

 CYTOPLASM AND — rrjc 

 GOLGI SUBSTANCE|;J 



FLAGELLUM WITH 



CONTAINE D AX I A I 



FILAMENT 



FAT DROPLETS FORMED 

 IN RELATION TO 

 GOLGI ELEMENT 



PRIMARY 

 ^ ;(^ EM8R YON IC 



Fig. 68. Possible fate of the primitive meiocyte and its cytoplasmic inclusions when 

 exposed to testicular or ovarian influences. Particular attention is given to the idiosome. 

 Under male-forming influences the idiosome components are dispersed during the matura- 

 tion divisions and are reassembled into three separate component structures, namely, 

 (I) Acroblast of Golgi substance, (2) centriolar bodies, and (3) mitochondrial bodies 

 (see B). Each of these structures, together with the post-nuclear granules of uncertain 

 origin, play roles in spermatogenesis as shown. Under ovarian influences the idiosome 

 is dispersed before the maturation divisions. The Golgi substance and mitochondria play 

 (according to theory, see text) their roles in the formation of the deutoplasm. 



129 



