. The biology of hydra and of some other coelenterates, 1961. Hydra; Cnidaria; Ctenophora; Cnidaria; Hydra. LI AND LENHOFF 447. -1 120 Isf feeding 2nd feeding 3rd feeding DAYS BUDS ARE GROWING 100 80 60 40 O en 20 Q. Fig. 6. DNA, RNA, and protein content of buds during growth to small bud stage Hydra. owing to an increase in protein, the bud's DNA/protein ratio dimin- ished to that of the parent (Fig. 6). These experiments suggest that in bud cells the amount of nuclear material is high relative to the cytoplasm, and that subsequent growth of the detached bud involves an increase in cytoplasmi
. The biology of hydra and of some other coelenterates, 1961. Hydra; Cnidaria; Ctenophora; Cnidaria; Hydra. LI AND LENHOFF 447. -1 120 Isf feeding 2nd feeding 3rd feeding DAYS BUDS ARE GROWING 100 80 60 40 O en 20 Q. Fig. 6. DNA, RNA, and protein content of buds during growth to small bud stage Hydra. owing to an increase in protein, the bud's DNA/protein ratio dimin- ished to that of the parent (Fig. 6). These experiments suggest that in bud cells the amount of nuclear material is high relative to the cytoplasm, and that subsequent growth of the detached bud involves an increase in cytoplasmic components rather than mitosis. REFERENCES 1. Burton, K. 1956. A study of the conditions and meclianism of diphenylamine reaction for the colorimetric estimation of deoxyribonucleic acid. Biochem. }. 62: 315-323. 2. Li, F. and H. M. Lenhoff. 1960. Nucleic acid patterns of Hydra budding in synchrony. Anat. Rec. 137: 376. 3. LooMis, W. F. and H. M. Lenhoff. 1956. Growth and sexual differentiation of hydra in mass culture. /. Exp. Zool. 132: 555-574. 4. LowRY, O. H., N. J. RosEBROUGH, A. L. Farr and R. J. Randall. 1951. Protein measurement with the Folin phenol reagent. /. Biol. Chem. 193: 265-275. 5. Schneider, W. C. 1957. Determination of nucleic acids in tissues by pentose analysis. Methods in Enzymologij 3: 680-691. Academic Press, Inc., New 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 Symposium on the Physiology and Ultrastructure of Hydra and Some Other Coelenterates (1961 : Coral Gables, Fla. ); Lenhoff, Howard M; Loomis, W. Farnsworth (William Farnsworth), 1914-. Coral Gables, Fla. , University of Miami Press
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