L 



©-©• 



Fig. 26. — Diagram to show the phases of Reduction 

 and the distribution of the chromosomes in the 

 gametes. 1, spermatogonium with two chromosomes 

 (one paternal and one maternal); 1'. synapsis; 3, for- 

 mation of tetrad: 4, spermatocytes; 5, spermatozoa. 



Fig. 27. — Diagram to show the phases of Re- 

 duction and the distribution of chromosomes in 

 the gametes. 1, spermatogonium with 4 chromo- 

 somes (two paternal and two maternal); 2, syn- 

 apsis; 3, formation of two tetrads: ,4 sperma- 

 tocytes; 5, spermatozoa. 



me 



