. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. Figs. 1-17.'—Fig. i, young pollen mother cell; fig. 2, nucleus showing leptotene threads; fig. 3, synizesis; fig. 4, pachynema, segments showing doubleness; fig. 5, strepsinema, chromosomes twisted about one another; fig. 6, early diakmesis; fig. 7, late diakinesis; fig. 8, multipolar spindle with double chromosomes in meshes; fig. 9, first metaphase; fig. 10, end of metaphase, homologous chromosomes separatmg; fig. n, anaphase showing attenuated form of chromosomes as they pass to poles; fig. 12 late anaphase; fig. 13, twe
. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. Figs. 1-17.'—Fig. i, young pollen mother cell; fig. 2, nucleus showing leptotene threads; fig. 3, synizesis; fig. 4, pachynema, segments showing doubleness; fig. 5, strepsinema, chromosomes twisted about one another; fig. 6, early diakmesis; fig. 7, late diakinesis; fig. 8, multipolar spindle with double chromosomes in meshes; fig. 9, first metaphase; fig. 10, end of metaphase, homologous chromosomes separatmg; fig. n, anaphase showing attenuated form of chromosomes as they pass to poles; fig. 12 late anaphase; fig. 13, twenty chromosomes at pole of spindle; fig. 14, early telophase (chromosomes have lost rounded appearance); fig. 15, nuclear membrane formed at telophase, chromatin and nucleoli reorganizing; fig. 16, late telophase showmg three nucleoli; fig. 17, nucleus at end of first division. » All figures are of Jersey White Bush squash, 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 University of Pennsylvania. Botanical Laboratory. Philadelphia : University of Pennsylvania Press
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1892
