. The cell in development and inheritance. Cells. Fig. 133. —The first maturation-division in flowering plants. [jF, STRASBURGER and MOT- TIER; the others from Mottier.] A. Mother-cell of the embryo-sac in LUiurn; early prophase of first division; chromatin- threads already longitudinally divided. B. Slightly later stage (split spireme) in the nucleus of the i5ollen-mother-cell. C. A slightly later prophase (pollen-mother-cell, Podophyllum) with twisted split spireme. D. Earlier prophase (»/w, female) ; split twisted chromosomes. .£. Equatorial plate {Liliiim, male). F. First maturation-sp
. The cell in development and inheritance. Cells. Fig. 133. —The first maturation-division in flowering plants. [jF, STRASBURGER and MOT- TIER; the others from Mottier.] A. Mother-cell of the embryo-sac in LUiurn; early prophase of first division; chromatin- threads already longitudinally divided. B. Slightly later stage (split spireme) in the nucleus of the i5ollen-mother-cell. C. A slightly later prophase (pollen-mother-cell, Podophyllum) with twisted split spireme. D. Earlier prophase (»/w, female) ; split twisted chromosomes. .£. Equatorial plate {Liliiim, male). F. First maturation-spindle {Fritillaria, male). G. Diver- gence of the daughter-chromosomes {Lilium, male). essentially with the interpretation of Vom Rath, Ruckert, etc. (p. 247). The primary rods split once, and bend into a V, the branches of which often come close together, and may be twisted on themselves, thus giving the appearance of the second longitudinal-split described in Strasburger's paper of 1895. The two halves of the split U then separate, opening out from the apex, to form the 0 -figure. In the. 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, bookdecade1910, booksubjectcells, bookyear1911
