. The cell in development and inheritance. Cells. Fig. 105.•—Independence of paternal and maternal chromatin in the segmenting eggs of Cyclops. \A-C. from RUCKERT; D. from Hacker.] A. First cleavage-figure in ; complete independence of paternal and maternal chromosomes. D. Resulting 2-cell stage with double nuclei. C. Second cleavage ; chromosomes still in double groups. D. Blastomeres with double nuclei from the 8-cell stage of C. breviconiis. tion, tJicir cuds lying in the nuclear lobes as before (Fig. 104, G, H). On the strength of these facts Boveri concluded that the chromosomes


. The cell in development and inheritance. Cells. Fig. 105.•—Independence of paternal and maternal chromatin in the segmenting eggs of Cyclops. \A-C. from RUCKERT; D. from Hacker.] A. First cleavage-figure in ; complete independence of paternal and maternal chromosomes. D. Resulting 2-cell stage with double nuclei. C. Second cleavage ; chromosomes still in double groups. D. Blastomeres with double nuclei from the 8-cell stage of C. breviconiis. tion, tJicir cuds lying in the nuclear lobes as before (Fig. 104, G, H). On the strength of these facts Boveri concluded that the chromosomes must be regarded as "individuals" or "elementary organisms," that have an independent existence in the cell. During the reconstruc- tion of the nucleus they send forth pseudopodia which anastomose to form a network in which their identity is lost to view. As the cell. 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 Wilson, Edmund B. (Edmund Beecher), 1856-1939. New York : The Macmillan company


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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcells, bookyear1896