. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 287 ? maternal and paternal elenoents, Montgomery, '02) chromosomes to form bivalent post-synaptic chromosomes. Frequently a longitudinal split appears transitorily in these threads. During synapsis the accessory chromosome assumes a position to the side of the group of ordinary chromosomes (Fig, 10) but more usually it lies at the base of the group. Just how intimate is its connection with the ordinary chromosomes during synizesis and synapsis could. (The figures were all drawn with Bausch and Lomb Yi« oil immersion lens, oc
. Anatomischer Anzeiger. Anatomy, Comparative; Anatomy, Comparative. 287 ? maternal and paternal elenoents, Montgomery, '02) chromosomes to form bivalent post-synaptic chromosomes. Frequently a longitudinal split appears transitorily in these threads. During synapsis the accessory chromosome assumes a position to the side of the group of ordinary chromosomes (Fig, 10) but more usually it lies at the base of the group. Just how intimate is its connection with the ordinary chromosomes during synizesis and synapsis could. (The figures were all drawn with Bausch and Lomb Yi« oil immersion lens, ocular No. I. The drawing surface was at 150 mm below the level of the stage. The figures have been reduced '/^ giving a magnification of 1400.) Fig. 1. Primary spermatogonium, resting stage. Fig. 2. Metaphase group of 35 chromosomes. Fig. 3. Secondary spermatogonium, resting stage. Fig. 4. Metapliase group of 35 chromosomes. Fig. 5. Side view of metaphase group of chromosomes. Fig. 6. Metaphase group of follicle cell of ovary with 36 chromosomes. Fig. 7. Late telophase of final secondary spermatogonial mitosis; lower cell howing accessory chromosome. Fig. 8. Primary spermatocyte, resting stage. Fig. 9. Presynaptic stages of growth period. Figs. 10, 11 and 12. Synapsis. not be definitely determined. Its position indicates a rather close re- lation at this stage with the general activity of the chromatin. It usually also shows a decided longitudinal split. During early post-. 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
Size: 1826px × 1368px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublisherjenagfischer, books
