. The biology of the Protozoa. Protozoa; Protozoa. 466 BIOLOGY OF THE PROTOZOA other case the sixteen macronuclei would all fuse to form one single macronucleus which would divide and form two groups of eight each (Fig. 196). In the latter case there was not only a definite adapta-. FiG. 194.— Uroleptus mobilis; orij^in of doutile individual. Above, two conju- gating cells; below, the double individual which was formed by the fusion of two such conjugating individuals. (Original.) tion to the new conditions but a further advance toward a com- posite animal of a new type and with a novel organi
. The biology of the Protozoa. Protozoa; Protozoa. 466 BIOLOGY OF THE PROTOZOA other case the sixteen macronuclei would all fuse to form one single macronucleus which would divide and form two groups of eight each (Fig. 196). In the latter case there was not only a definite adapta-. FiG. 194.— Uroleptus mobilis; orij^in of doutile individual. Above, two conju- gating cells; below, the double individual which was formed by the fusion of two such conjugating individuals. (Original.) tion to the new conditions but a further advance toward a com- posite animal of a new type and with a novel organization. The synchronous activities indicate that common responses to common. 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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