Abstract
DEOXYRIBONUCLEIC acid (DNA) is thought to be formed by replication. Meselson and Stahl1 have used a density-gradient centrifugation technique to show that bacterial DNA is bipartite as was proposed by Watson and Crick2 and that it reproduces in a semi-conservative fashion3, each original sub-unit being found associated, on replication, with a newly formed sub-unit.
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References
Meselson, M., and Stahl, F. W., Proc. U.S. Nat. Acad. Sci., 44, 671 (1958).
Watson, J. D., and Crick, H. C., Cold Spring Harbor Symp. Quant. Biol., 18, 123 (1953).
Delbrück, M., and Stent, G. S., in “The Chemical Bases of Heredity”, edit. by McElroy, W. D., and Glass, B., 699 (1957).
Ryan, F. J., Nakada, D., and Schneider, M., Z. Vererbungslehre (in the press).
Ryan, F. J., and Schneider, L. K., Genetics, 34, 72 (1949).
Nakada, D., Biochim. Biophys. Acta, 44, 241 (1960).
Nakada, D., Strelzoff, E., Rudner, R., and Ryan, F. J., Z. Vererbungslehre, 91, 210 (1960).
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NAKADA, D., RYAN, F. Replication of Deoxyribonucleic Acid in Non-dividing Bacteria. Nature 189, 398–399 (1961). https://doi.org/10.1038/189398a0
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DOI: https://doi.org/10.1038/189398a0
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