. The Biological bulletin. Biology; Zoology; Marine biology. 98 PAULINE H. DEDERER. larity of form and division of all the chromosomes. The nuclear membrane disappears at the metaphase. In telophase, the chro- mosomes are crowded into a dense mass, in which it is difficult to determine the outlines of individual ones (Fig. 6). After the daughter cells have formed, and the nuclear mem- brane again encloses the chromosomes, the nucleus increases in. Fig. 19, f-q. Various views of nucleoli during growth period, showing relation of idiochromosome to plasmosome. Figs. 20, 21. Early ring stage—idioc
. The Biological bulletin. Biology; Zoology; Marine biology. 98 PAULINE H. DEDERER. larity of form and division of all the chromosomes. The nuclear membrane disappears at the metaphase. In telophase, the chro- mosomes are crowded into a dense mass, in which it is difficult to determine the outlines of individual ones (Fig. 6). After the daughter cells have formed, and the nuclear mem- brane again encloses the chromosomes, the nucleus increases in. Fig. 19, f-q. Various views of nucleoli during growth period, showing relation of idiochromosome to plasmosome. Figs. 20, 21. Early ring stage—idiochromosome attached to plasmosome. Figs. 22-25. Four views of later stage—showing twelve rings and nucleolus. Figs. 26-29. Contraction of rings into chromosomes. size, and the chromosomes spread out into the cavity. Figs. 7, 8 show a transition from the characteristic round or oval chro- mosomes of the spermatogonia into rods of varying length 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 Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-; Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report; HighWire Press. Lancaster, Pa. [etc. ] : Lancaster Press, inc. [etc. ]
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