. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 105 min. 165 min. FIGURE 2. Asterias egg bisected 40 minutes after deposition in sea water, both fragments inseminated simultaneously. A. At 40 minutes. Cutting of unfertilized egg with microneedle, n. B. At 100 minutes. Both fragments with fertilization membranes. Haploid fragment with sperm aster, Diploid fragment with first which had formed 25 minutes earlier. C. At 105 minutes. Haploid fragment with considerably enlarged sperm aster. Diploid fragment with beginning sperm aster and second wrhich
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 105 min. 165 min. FIGURE 2. Asterias egg bisected 40 minutes after deposition in sea water, both fragments inseminated simultaneously. A. At 40 minutes. Cutting of unfertilized egg with microneedle, n. B. At 100 minutes. Both fragments with fertilization membranes. Haploid fragment with sperm aster, Diploid fragment with first which had formed 25 minutes earlier. C. At 105 minutes. Haploid fragment with considerably enlarged sperm aster. Diploid fragment with beginning sperm aster and second wrhich had formed two minutes earlier. D. At 165 minutes. Haploid fragment just after completion of first cleavage. Diploid fragment still in amphiaster 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
