. The biology of the Protozoa. Protozoa; Protozoa. Fig. —Monocystis rostrata chromosome reduction. A, Formation of spindle in pseudo-conjugant; B, C, nuclear plates of progamous divisions, 8 chromosomes; D, anaphase of same; E, anaphase of last progamous division, the number of chromo- somes is here reduced from 8 to 4. (After Mulsow.) A small nmnber of chromosomes is likewise found in a number of the Gregarinida, and their history in division approaches that of metazoan chromosomes. Thus in the case of Monocystis rostrata Mulsow describes 8 definite chromosomes formed from a portion of th
. The biology of the Protozoa. Protozoa; Protozoa. Fig. —Monocystis rostrata chromosome reduction. A, Formation of spindle in pseudo-conjugant; B, C, nuclear plates of progamous divisions, 8 chromosomes; D, anaphase of same; E, anaphase of last progamous division, the number of chromo- somes is here reduced from 8 to 4. (After Mulsow.) A small nmnber of chromosomes is likewise found in a number of the Gregarinida, and their history in division approaches that of metazoan chromosomes. Thus in the case of Monocystis rostrata Mulsow describes 8 definite chromosomes formed from a portion of the nuclear chromatin, the nmnber being reduced to 4 in the gamete- forming divisions (Fig. 03). Shellack and Leger, also, have described. 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 Calkins, Gary N. (Gary Nathan), b. 1869. Philadelphia, New York, Lea & Febiger
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