. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 11 12. FIG. ii. Spindle showing two supernumeraries (s), each attached to spindle fibers from both poles. Mag. 2,000. FIG. 12. Anaphase showing supernumerary (s) about to divide. FIG. 13. Metaphase showing X, a supernumerary (5) attached to one spindle fiber, and another (5) attached to two. m = mitochondria. some in both spermatogonial and spermatocyte mitosis (Figs, ii and 13). The supernumeraries seem to be able to make connections with both poles in most cases if they are in or near the equatorial plate in late prophase


. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 11 12. FIG. ii. Spindle showing two supernumeraries (s), each attached to spindle fibers from both poles. Mag. 2,000. FIG. 12. Anaphase showing supernumerary (s) about to divide. FIG. 13. Metaphase showing X, a supernumerary (5) attached to one spindle fiber, and another (5) attached to two. m = mitochondria. some in both spermatogonial and spermatocyte mitosis (Figs, ii and 13). The supernumeraries seem to be able to make connections with both poles in most cases if they are in or near the equatorial plate in late prophase stages. SEX RATIOS. The sex ratios in Diabrotica soror and Diabrotica 12-pitnctata have shown very peculiar variations. In studying the male germ cells of D. soror in 1907 I made no note of the number of females found in random collections, but in dissecting D. 12-. 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