THE CARRIERS OF THE HERITAGE 19 



membrane and the more compact form of the chromo- 

 somes. At the end of the prophase (Fig. 8) the chro- 

 mosomes have come to lie at the equator of the cell. 



F»g. 4. TFie resting cell Rg. 5. Be^innin^ Prophase Fl J.6. Earlij Prophase 



n^.7 Prophase 



ng.8. End of Prophase nj.9. Metaphase 



Pig. 10. Beginning Anaphase 



Rg.ll. Anaphase 



R^.12 Beginning Telophase n^.i3. End of Telophase 



Figs. 4-13. — Diagrams illustrating mitosis. After Boveri. 



being connected by the mantle fibers with the cen- 

 trosomes, each of which has now come to occupy a 

 polar position. In the metaphase (Fig. 9) the chromo- 

 somes split lengthwise, and at the beginning of the 



