. An atlas of the fertilization and karyokinesis of the ovum. Ovum; Fertilization (Biology); Meiosis; Embryology -- Echinodermata. sic ^ife^l^ ^> --fiif^^. Fig. XVI. Fig. XVI. — The "anaphases"; divergence of the daughter-chromosomes (looo diameters). A. The chromosomes in various stages of separation. In tuo of them the daughter-chromosomes are still united at one end. B. Divergence of the daughter-chromosomes. (Phototype 31.) to which they are attached, are believed to be mechanically dragged apart and transported to the spindle-poles. This view is supported by evidence so stron
. An atlas of the fertilization and karyokinesis of the ovum. Ovum; Fertilization (Biology); Meiosis; Embryology -- Echinodermata. sic ^ife^l^ ^> --fiif^^. Fig. XVI. Fig. XVI. — The "anaphases"; divergence of the daughter-chromosomes (looo diameters). A. The chromosomes in various stages of separation. In tuo of them the daughter-chromosomes are still united at one end. B. Divergence of the daughter-chromosomes. (Phototype 31.) to which they are attached, are believed to be mechanically dragged apart and transported to the spindle-poles. This view is supported by evidence so strong that it can scarcely be escaped in the case of some animal cells. Strasburger and some other botanists, on the other hand, maintain that there is no evidence in its favour in the case of plant-cells and regard the movement of the daughter-chromosomes as perhaps a chemotactic action caused by the formation of special chemical products at the spindle-poles. As the phototypes about to be described clearly show, the facts in Toxopncitstes do not accord entirely with either of these views. Platp: VIII. Phototype 30. Early Anaphase^ showing especially the Achromatic Structures. The daughter-chromosomes (not very sharply shown) are separating. The centrospheres have become sharply defined, and the reticulum is clearly shown. The astral rays are 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; Leaming, Edward, 1861-1916. New York, London, Pub. for the Columbia university press by Macmillan and co.
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Keywords: ., bookauthorwilsoned, bookcentury1800, bookdecade1890, bookyear1895
