Studies on Chromosomes 



163 



•*'• cv #•• **\- 



•*♦ *i*^, ••If ^-.^ 



% 







• ^ • / • ^ • ^ ^ / 







/6 



m 



/ 



Fig. 4 



22-chromosome forms 



rt-/, first division; a, 6, term. No. 19, typical (Photo 2); c, term. No. ^12 (Photo 3); d,e,iem. No. 29 

 /. term. No. 12; ^, h, term. No. 19, idiochromosomes united; /, fern. No. 29, same condition;;, gran. No. 

 47; k, fem. No. 29, first division, side view, idiochromosomes united; /, fern. No. 46 (Photo 11), first divi- 

 sion, anaphase, division of both idiochromosomes. 



m-q, spermatogonia! groups; m, term. No. 19; n, 0, fem. No. 46; p, q, fem. No. 29. 



r-t, ovarian groups; r, term. No. 24: s, term. No. 44; t, term. No. 23, exceptional form and grouping. 



