. Cytology, with special reference to the metazoan nucleus. Cells; Cytology. ^ f^ (Id. H Fig. 56. The chromosomes of Culex as figured by diflerent workers, showing the close approximation of homologous chromosomes. (A, B, from Stevens, , 1910 ; C, from Taylor, , 1915 ; D. E, from Whiting, , 1917 ; F, G., from Hance, , 1917 ; H, I, J, from Metz, , 1916.) A, spermatogooial pro- phase ; only one of the three chromatin threads is visibly double ; B, spermatogoniaJ metaphase, three pairs of separate chromosomes; C, somatic prophase; D, spermatogonia! prophase ; E, sperma
. Cytology, with special reference to the metazoan nucleus. Cells; Cytology. ^ f^ (Id. H Fig. 56. The chromosomes of Culex as figured by diflerent workers, showing the close approximation of homologous chromosomes. (A, B, from Stevens, , 1910 ; C, from Taylor, , 1915 ; D. E, from Whiting, , 1917 ; F, G., from Hance, , 1917 ; H, I, J, from Metz, , 1916.) A, spermatogooial pro- phase ; only one of the three chromatin threads is visibly double ; B, spermatogoniaJ metaphase, three pairs of separate chromosomes; C, somatic prophase; D, spermatogonia! prophase ; E, spermatogonia! anaphase; F, ovarian (diploid) prophase; G, spermatogonia! metaphase; H, I, J, prophase, metaphase, and anaphase of somatic mitoses. complex of this mosquito (where 2w = 6) as depicted by various workers. As will be seen, the homologous chromosomes in prophase (Fig. 56, A, C, D, F, H) are generally intimately applied to or twisted round one another, quite as closely as are the daughter halves of split prophase chromosomes in the somatic mitoses of many other forms (Figs. 3, 8). ;. 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 Agar, Wilfred Eade, 1882-. London Macmillan
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectcells, bookyear1920
