Studies on Chromosomes 



::.*:.:* A 



' - '* ' < 



urn. 



w. 



FIG. 5 



22-chromosome forms 



a-c, second division, polar view; a, fern. No. 19; b, fern. No. 28; c, gran., 47 (Photo 12). 



d-p, second division, side view; d-h, fern. No. 29, metaphases, separation of idiochromosomes; i j, 

 term. No. 19, anaphases, lagging of one idiochromosome; k-m, gran., No. 47, late anaphases (Photo 17); 

 w, term., No. 19, late anaphase, lagging large idiochromosome; o, fern., No. 46, exceptional condi- 

 tion, both idiochromosomes passing to one pole (Photo 18); p, term. No. 19, similar form; q, r, term., 

 No. 19, sister anaphase groups, from the same spindle; 3, t, fern., No. 29, the same. 



