﻿Hance : Pollen development in Zebrina pendula 



Figs. 10-17. Metaphase of Heterotypic Division 

 :i. 10. Polar view showing 13 pairs c 

 ;i. II. Polar view showing 13 pairs of chrom( 

 s. 12. Polar view showing 12 pairs of chromi 

 :j. 13. Polar view showing 12 pairs of chrom 



I reformed nuclei 



Figs. 24-26. Homotypic 1 

 Figs. 24, 25, 26. Stages in the formation of t 

 Tie omitted from the reformed nucleus. 



i pollen. Two nuclei are s 



