228 REPRODUCTION 



Pi Zygote of Parental Generation 



Early Female Germ - cells - Oogonia 

 'Oermplasm" 



Body-oells 

 "Somatoplasm" 



Single Oogonium and its Diolsion 

 to form other oSgonia in each of 

 which Qrawth and Synapsis occurs 



Representative Cell 

 of Female Body 



Synapsis 



I. Maturation 

 Division 



'■'■' m 



P.B. I 



Zygote - Female 



Spermatozoa 



Fig. 114. — Diagram of maturation in female germ cells, oogenesis, showing 

 eight paired chromosomes and two " X " or sex chromosomes, and fertiliza- 

 tion of ova by spermatozoa to form male and female individuals. 



As in Fig. 113, the oosperm or zygote, with its eight paired chromosomes, the autosomes, 

 and two "X" or sex chromosomes, is shown giving rise to cells of the body and to the 



