. Cytology, with special reference to the metazoan nucleus. Cells. 60 CYTOLOGY chap. exact limits cannot be made out. Other species of Copepoda exhibit intermediate conditions. Hacker (1893) made the interesting observation that the degree of diffusion of the chromosomes during the germinal vesicle stage may vary in a single species. Cyclops and the allied genera of Copepoda mostly. Fig. 24. The chromosomes during the oogenesis of Heterocope salients from the pachytene stage (A), through the germinal vesicle stage (B, C) to the condensation of the definitive bivalents (D). (Matschek, , 191
. Cytology, with special reference to the metazoan nucleus. Cells. 60 CYTOLOGY chap. exact limits cannot be made out. Other species of Copepoda exhibit intermediate conditions. Hacker (1893) made the interesting observation that the degree of diffusion of the chromosomes during the germinal vesicle stage may vary in a single species. Cyclops and the allied genera of Copepoda mostly. Fig. 24. The chromosomes during the oogenesis of Heterocope salients from the pachytene stage (A), through the germinal vesicle stage (B, C) to the condensation of the definitive bivalents (D). (Matschek, , 1910.) lay their eggs in batches, of about ten to about a hundred at a time. The eggs when laid do not leave the animal completely, but are cemented together into masses, the so-called egg-sacs, which are carried about by the animal until they hatch. A new batch of eggs is not laid till the previous batch has hatched. In females of Cyclops strenuns which have not yet laid any eggs, no. 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 Agar, W. E. (Wilfred Eade), 1882-1951. London, Macmillan and Co. , limited
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectcells, bookyear1920
