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Tuatara: Volume 13, Issue 1, April 1965

Fig. 1, a-l: Stage of mitosis from sections of a root tip meristem of Allium cepa, stained in haematoxylin. a-c, prophase; d, metaphase; e-j, anaphase; k, telophase; l, interphase-metabolic nuclei. The darkly stained regions in l, a and b are the nucleoli; note their absence in c-j and their early stages of reformation in k. f is a single chromosome at early anaphase from a squash preparation showing the centromeres (appearing as breaks in the chromosome arms) beginning to peel the sister chrom…

Fig. 1, a-l: Stage of mitosis from sections of a root tip meristem of Allium cepa, stained in haematoxylin. a-c, prophase; d, metaphase; e-j, anaphase; k, telophase; l, interphase-metabolic nuclei. The darkly stained regions in l, a and b are the nucleoli; note their absence in c-j and their early stages of reformation in k. f is a single chromosome at early anaphase from a squash preparation showing the centromeres (appearing as breaks in the chromosome arms) beginning to peel the sister chromatids apart. In k the beginnings of the cell plate formation can be seen.

Fig. 1, a-l: Stage of mitosis from sections of a root tip meristem of Allium cepa, stained in haematoxylin. a-c, prophase; d, metaphase; e-j, anaphase; k, telophase; l, interphase-metabolic nuclei. The darkly stained regions in l, a and b are the nucleoli; note their absence in c-j and their early stages of reformation in k. f is a single chromosome at early anaphase from a squash preparation showing the centromeres (appearing as breaks in the chromosome arms) beginning to peel the sister chromatids apart. In k the beginnings of the cell plate formation can be seen.