Fig. 19. Early anaphase of the first spermatocyte, with the accessory chromosome already at one pole.
Fig. 20. Mid-anaphase, with the giant chromosome still undivided.
Fig. 21. Later anaphase, in which the accessory chromosome is seen at the lower pole. This figure shows, also, the character and extent of the intercellular material.
Fig. 22. Later anaphase. The accessory chromosome at the upper pole. An undivided chromosome lying between the groups of daughter chromosomes.
Fig. 23. About the stage of figure 22, but the lagging chromosome has divided.
Fig. 24. Very late anaphase. Here, again, the lagging chromosome is divided.
Fig. 25. Pole view of first spermatocyte telophase, showing the accessory chromosome at one side of the daughter chromosomes.
Fig. 26. Pole view of a cell in the same stage as that represented in figure 25. Here, however, the accessory chromosome is not present.
Fig. 27. Lateral view of telophase, with the accessory chromosome in the lower daughter-cell.
Fig. 28. Fragment of second spermatocyte, showing the chromosomes in metaphase. The relative sizes of the accessory chromosome and the remaining chromosomes is well shown.