The cell in development and inheritance . indles join side by side (Fig. no, G), and this gives good reasonto believe that the chromatin of the two gametes is equally distrib-uted to the daughter-nuclei as in Metazoa. In the conjugation ofsome other Protozoa the nuclei unite while in the resting state; butvery little is known of the process save in the cystoflagellate Nocti-luca, which has been studied with some care by Cienkowsky andIshikawa (Fig. 112). Here the conjugating animals completely fuse,but the nuclei are merely apposed and give rise each to one-half of 228 FERTILIZATION OF THE OVU
The cell in development and inheritance . indles join side by side (Fig. no, G), and this gives good reasonto believe that the chromatin of the two gametes is equally distrib-uted to the daughter-nuclei as in Metazoa. In the conjugation ofsome other Protozoa the nuclei unite while in the resting state; butvery little is known of the process save in the cystoflagellate Nocti-luca, which has been studied with some care by Cienkowsky andIshikawa (Fig. 112). Here the conjugating animals completely fuse,but the nuclei are merely apposed and give rise each to one-half of 228 FERTILIZATION OF THE OVUM the mitotic figure. At either pole of the spindle is a centrosome, theorigin of which remains undetermined. It is an interesting fact that in Noctihica, in the gregarines, andprobably in some other Protozoa, conjugation is followed by a veryrapid multiplication of the nucleus followed, by a corresponding divi-sion of the cell-body to form spores, which remain for a timeclosely aggregated before their liberation. The resemblance of this.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1902
