. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. TEXT-FIG, i. Diagram illustrating the general course of spermatogenesis in the common fowl: a, polar view of spermatogonial metaphase showing sixteen chromosomes, of which two are characteristically curved; b, spermatogonial meta- phase viewed from the side; c, products of spermatogonial division; d, polar view of metaphase in primary spermatocyte showing nine bivalent chromosomes of which one is U-shaped; e,f, g, successive stages in the division of the primary spermatocyte, the curved chromosome passing undivided to one po
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. TEXT-FIG, i. Diagram illustrating the general course of spermatogenesis in the common fowl: a, polar view of spermatogonial metaphase showing sixteen chromosomes, of which two are characteristically curved; b, spermatogonial meta- phase viewed from the side; c, products of spermatogonial division; d, polar view of metaphase in primary spermatocyte showing nine bivalent chromosomes of which one is U-shaped; e,f, g, successive stages in the division of the primary spermatocyte, the curved chromosome passing undivided to one pole and thus producing a di- morphism in the daughter cells; h, secondary pairing of the autosomes at the metaphase of the secondary spermatocytes, the curved element remaining un- affected; i, j, k, stages in the division of the five-chromosomed secondary spermato- cytes, each spermatid (k) receiving five chromosomes, of which four are probably double and therefore equivalent to eight univalent ones; /, secondary pairing of the chromosomes in the secondary spermatocytes which did not receive the curved element ;m,n, o, stages in the division of the four-chromosomed secondary spermato- cytes, the resulting spermatids (o) probably not giving rise to mature 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
