. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RONALD C. RUSTAD, SHUHEI YUYAMA AND LYNNE C. RUSTAD stratified organelles became redistributed rapidly by Brownian motion. When the cut was made on the centripetal side of the "mitochondria! layer" (Fig. 1), the nucleate fragments could be fertilized (elevating fertilization membranes) but did not divide within 24 hours. However, when the "mitochondrial layer" was included in the nucleate fragments (Fig. 1) they divided at approximately the same time as whole eggs. When anucleate eggs which lacked the &qu
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RONALD C. RUSTAD, SHUHEI YUYAMA AND LYNNE C. RUSTAD stratified organelles became redistributed rapidly by Brownian motion. When the cut was made on the centripetal side of the "mitochondria! layer" (Fig. 1), the nucleate fragments could be fertilized (elevating fertilization membranes) but did not divide within 24 hours. However, when the "mitochondrial layer" was included in the nucleate fragments (Fig. 1) they divided at approximately the same time as whole eggs. When anucleate eggs which lacked the "mitochondrial layer" were fertilized they divided some 40 to 70 minutes later than whole eggs. In contrast, haploid fragments which contained the "mitochondrial layer" were only delayed from 5 to 10 minutes compared to whole cells and were not detectably delayed compared to uncentrifuged haploids from the same animal. Thus, some factor found in the "mitochondrial layer" appears to be essential for a normal rate of division. FIRST DIVISION. SECOND DIVISION Dw. 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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