. General physiology; an outline of the science of life. . II Fig. 74.—I. Division of the frog'segg. P, Pigmented surface of the %gg ; pr, protoplasmic pole ; d, pole rich in yolk ; sp, nuclear spindle. (After Hertwig.) //. Unequal division of the egg of a worm (Fahricia). A, Protoplasmic pole ; V, pole rich In yolk. (After Haeckel.) all known forms of cell-division can be conveniently classified under four types— I. Total division. a. Equal division. h. Unequal division. c. Gemmation. II. Partial division. III. Multiple division. IV. Reducing division. In total division, the protoplasm of the
. General physiology; an outline of the science of life. . II Fig. 74.—I. Division of the frog'segg. P, Pigmented surface of the %gg ; pr, protoplasmic pole ; d, pole rich in yolk ; sp, nuclear spindle. (After Hertwig.) //. Unequal division of the egg of a worm (Fahricia). A, Protoplasmic pole ; V, pole rich In yolk. (After Haeckel.) all known forms of cell-division can be conveniently classified under four types— I. Total division. a. Equal division. h. Unequal division. c. Gemmation. II. Partial division. III. Multiple division. IV. Reducing division. In total division, the protoplasm of the daughter-cells is com- pletely divided by a partition, so that complete cells always result from the division. But certain differences are here noticeable. In one case, that of equal division, the daughter-cells are entirely equal, as in the type described above (Fig. 72, F). In another case, that of lonequal division (Fig. 74), the two daughter-cells are 0 2. 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 Verworn, Max, 1863-1921; Lee, Frederic S. (Frederic Schiller), 1859-1939. London, Macmillan and co. , limited; New York, The Macmillan company
Size: 1110px × 2252px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookauthorverwornmax18631921, bookcentury1800, bookdecade1890
