. The cell in development and inheritance. Cells. Fig. 113. — Conjugation ol Spirogyta. [OvFRTON.] A. Union of the conjugating cells (5. communis). B. The typical, though not invariable, mode of fusion in 5. W'eberi; the chromatophore of the "female" cell breaks in the middle, while that of the " male " cell passes into the interval. C. The resulting zygospore filled with pyrenoids, before union of the nuclei. D. Zygospore after fusion of the nuclei and formation of the membrane. process to the fertilization and subsequent cleavage of the ovum is particularly striking. The
. The cell in development and inheritance. Cells. Fig. 113. — Conjugation ol Spirogyta. [OvFRTON.] A. Union of the conjugating cells (5. communis). B. The typical, though not invariable, mode of fusion in 5. W'eberi; the chromatophore of the "female" cell breaks in the middle, while that of the " male " cell passes into the interval. C. The resulting zygospore filled with pyrenoids, before union of the nuclei. D. Zygospore after fusion of the nuclei and formation of the membrane. process to the fertilization and subsequent cleavage of the ovum is particularly striking. The conjugation of unicellular plants shows some interesting features. Here the conjugating cells completely fuse to form a "zygospore" (Figs. 113, 140), which as a rule becomes surrounded by a thick membrane, and, unlike the animal conjugate, may long remain in a quiescent state before division. Not only do the nuclei. 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 Wilson, Edmund B. (Edmund Beecher), 1856-1939. New York Macmillan
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectcells, bookyear1906
