The Chemical Basis of Heredity Determinants 337 



such unstabilization processes may be actually as important as muta- 

 tions because the injury may determine the part of the molecule where 

 the fault in the reproduction (i.e., mutation) is most likely to occur. 34 

 The work described herein is part of a research project supported 

 by grants from the National Institutes of Health, Public Health Serv- 

 ice, by a grant-in-aid from the American Cancer Society upon recom- 

 mendation of the Committee on Growth of the National Research 

 Council, and by an institutional grant from the American Cancer 

 Society to Columbia University. 



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