. The germ-cell cycle in animals . Cells. 178 GERM-CELL CYCLE IN ANIMALS tigen plasmatischen Qualitdten des sich entwickeln- den Zellenkomplexes" that cause the injurious re- sults of dispermy, and that if, of the three types of dispermic eggs described, the cells could be iso- lated in pairs, one ^B-cell paired with one Pi-cell,. Fig. 53. — Ascaris. A. Chromatin-diminution in a ceutrifuged egg. B. In a dispermic egg. {From Boveri, 1910.) an embryo, normal except in size, would result from each pair. Eggs that were strongly centrifuged cut off at the beginning of the first cleavage at the
. The germ-cell cycle in animals . Cells. 178 GERM-CELL CYCLE IN ANIMALS tigen plasmatischen Qualitdten des sich entwickeln- den Zellenkomplexes" that cause the injurious re- sults of dispermy, and that if, of the three types of dispermic eggs described, the cells could be iso- lated in pairs, one ^B-cell paired with one Pi-cell,. Fig. 53. — Ascaris. A. Chromatin-diminution in a ceutrifuged egg. B. In a dispermic egg. {From Boveri, 1910.) an embryo, normal except in size, would result from each pair. Eggs that were strongly centrifuged cut off at the beginning of the first cleavage at the heavy pole a gleiche Wertigkeit besitzen, wie diejenigen, die durch Zweiteilung eines normal-befruchteten Eies gebildet warden, namlich die Wertigkeit AB oder Pi. Es konnen drei Zellen die Qualitat AB besitzen oder zwei oder eine; dem jeweiligen Rest kommt die Qualitat Pi zu. Schon beim Uebergang vom vierzelligen zum achtzelligen Stadium lasst sich aus der Teilungsrichtung mit sicherheit diagnostizieren, welche der vier primaren Blastomeren als AB, welche als Pi aufzufassen smd; und diese Wert- bestimmung wird durch die weiteren Schicksale der vier Zellfamilien in jeder Hinsicht bestatigt " (p. 157).. 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 Hegner, Robert William, 1880-1942. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectcells, bookyear1914
