. The cell in development and inheritance. Cells. DETAILS OF MITOSIS 95 nucleus with no trace of a centrosome. In this same form, as described above, the ordinary vegetative mitoses are quite of the metazoan type, with a persistent extranuclear centrosome. The history of the chromatin in the mitosis of unicelkilar forms shows some interesting modifications. In a considerable number of forms a more or less clearly marked spireme-stage precedes the forma- tion of chromosomes (diatoms, Infusoria, dinoflagellates, ir//^/j////rt); in others, long chromosomes are formed without a distinct spireme- s
. The cell in development and inheritance. Cells. DETAILS OF MITOSIS 95 nucleus with no trace of a centrosome. In this same form, as described above, the ordinary vegetative mitoses are quite of the metazoan type, with a persistent extranuclear centrosome. The history of the chromatin in the mitosis of unicelkilar forms shows some interesting modifications. In a considerable number of forms a more or less clearly marked spireme-stage precedes the forma- tion of chromosomes (diatoms, Infusoria, dinoflagellates, ir//^/j////rt); in others, long chromosomes are formed without a distinct spireme- stage {Noctiluca). It has been clearly demonstrated that in some cases these chromosomes split lengthwise, as in Metazoa {Noctiluca,. 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 Macmillan
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1906
