Archive image from page 119 of The development of the frog's. The development of the frog's egg; an introduction to experimental embryology . developmentoffro00morg Year: 1897 104 DEVELOmiEXT OF THE FROG'S EGG [Ch. X the apices of the spindle, must also be considered. The centro- somes determine the position of the poles of the nuclear spindle. Moreover, the position of apposition of the tAvo pronuclei of the egg may be a further factor in the first cleavage. The Distribution- of the Nuclei in the Coinipressed Egg In the experiments recorded above, where the frog's egg is compressed during
Archive image from page 119 of The development of the frog's. The development of the frog's egg; an introduction to experimental embryology . developmentoffro00morg Year: 1897 104 DEVELOmiEXT OF THE FROG'S EGG [Ch. X the apices of the spindle, must also be considered. The centro- somes determine the position of the poles of the nuclear spindle. Moreover, the position of apposition of the tAvo pronuclei of the egg may be a further factor in the first cleavage. The Distribution- of the Nuclei in the Coinipressed Egg In the experiments recorded above, where the frog's egg is compressed during the cleavage-period, the distribution of nuclei in the protoplasm is different from that in the normal ep-o-. This is illustrated in the accompanying diagrams (Fig. 33). Let us call the segmentation-nucleus A, and its first products
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