. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 289 represents the synapsis - point of the original chromosomes — as it probably does judging from similar form and size relations, both the synapsis and the fission being at right angles to the long axis of the elongate chromosomes — this mitosis accomplishes a division of whole chromosomes and is thus a true reducing division. Sometimes the ordinary chromosomes show a precocious longitudinal split at telophase. Figs. 13, 14, 15 and 16. Postsynapsis; accessory chromosome in various phases. Fig. 17. Early prophase of first ma
. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 289 represents the synapsis - point of the original chromosomes — as it probably does judging from similar form and size relations, both the synapsis and the fission being at right angles to the long axis of the elongate chromosomes — this mitosis accomplishes a division of whole chromosomes and is thus a true reducing division. Sometimes the ordinary chromosomes show a precocious longitudinal split at telophase. Figs. 13, 14, 15 and 16. Postsynapsis; accessory chromosome in various phases. Fig. 17. Early prophase of first maturation mitosis. Fig. 18. Later prophase stage; accessory chromosome bipartite. Figs. 19 and 20. Still later prophase; chromosomes pale, mossy and in form of tetrad; accessory U-shaped, compact and chromatic. Fig. 21. Final prophase stages. Fig. 22. Metaphase groups of four contiguous primary spermatocytes each with 18 chromosomes. Fig. 23. Primary spermatocyte group of 18 chromosomes with accessory clearly shown to right. of the first mitosis, while the accessory invariably does so (Fig. 29). For both types of chromosomes, the second division is equational. The Anat. Anz. XXXII. Aufsätze. 19. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Anatomische Gesellschaft. Jena : G. Fischer
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