. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. §88 • *> AA** FIG. i. a, b, Syromastes marginatus L., spermatogonial chromosome- groups ; c, d, ovarian groups of the same ; e, f, Pyrrochoris apterus L., ovarian chromosome-groups. equal size (as is shown in the photographs accompanying the paper), and that they are recognizable in the spermatogonial groups as two separate chromosomes which are the second and third smallest of all the chromosomes. In the female groups each of these chromosomes is represented by a corresponding pair (black in the figures). In most of the
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. §88 • *> AA** FIG. i. a, b, Syromastes marginatus L., spermatogonial chromosome- groups ; c, d, ovarian groups of the same ; e, f, Pyrrochoris apterus L., ovarian chromosome-groups. equal size (as is shown in the photographs accompanying the paper), and that they are recognizable in the spermatogonial groups as two separate chromosomes which are the second and third smallest of all the chromosomes. In the female groups each of these chromosomes is represented by a corresponding pair (black in the figures). In most of the ovarian groups the smaller two are readily recognizable, and in some cases, though not al- ways, this is also true of the larger pair. The numerical and size-relations are such as to show that after maturation the egg must contain one member of each of these pairs. Though noth- ing is directly known of the maturation-process in the female, it may be inferred with probability that in synapsis the two larger and the two smaller of these pairs unite to form two correspond- ing bivalents, which may be designated as aa and bb (II and 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
