. The Biological bulletin. Biology; Zoology; Marine biology. •.V B I'ln I. D • % •4 £ F •V G H Fig. 2. Acholla multisphiosa. A, prophase of the first division ; the large chro- mosome is joined end to end with two others ; B, anaphase, polar view, of the first division ; C, anaphase, side view, of the first division, showing the late division of the large chromosome and the two with which it is linked ; Z?, anaphase, side view of the first division, showing the division of the three small chromosomes ; E, metaphase of the second division, polar view, showing the ten chromosomes in the ring and


. The Biological bulletin. Biology; Zoology; Marine biology. •.V B I'ln I. D • % •4 £ F •V G H Fig. 2. Acholla multisphiosa. A, prophase of the first division ; the large chro- mosome is joined end to end with two others ; B, anaphase, polar view, of the first division ; C, anaphase, side view, of the first division, showing the late division of the large chromosome and the two with which it is linked ; Z?, anaphase, side view of the first division, showing the division of the three small chromosomes ; E, metaphase of the second division, polar view, showing the ten chromosomes in the ring and the five members of the hexad group which lie in one plane ; F, a slightly oblique view of the second division metaphase showing the hexad group ; G and H, anaphases, polar view, of the second division, showing the chromatin conteiit of the two classes of spermatozoa. with which it is joined are usually the last to divide (Fig. 2, C, a side view of the first division anaphase). Fig. 2, B,\s a polar view showing 16 chromosomes. There is no definite arrange-. 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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Keywords: ., bookcentury1800, bookdecade1890, booksubjectb, booksubjectzoology