554 Specific Rejerences 



Drosophila melanogaster. Bull. Acad. Sci. (U.S.S.R.) 393-426. J. 



ScHULTZ. 1936. Variegation in Drosophila and the inert chromosome re- 

 gions. Proc. Nat. Acad. Sci. 22:27-33. G. H. Shull. 1928. The 



'^outside-in" Oneothera flower, a new morphological type produced by the 

 interaction of two recessive Mendelian factors. Proc. Nat. Acad. Sci. 14: 

 142-146. E. Sutton. 1940. The structure of salivary gland chromo- 

 somes of Drosophila melanogaster in exchanges between euchromatin and 

 heterochromatin. Genetics 25:534-540. 



CHAPTER 15 



H. H. Bartlett. 1915. Mass mutation in Oenothera pratincola. Bot. 



Gfl^. 60:425-456. C. B. Bridges. 1919. The developmental stages at 



which mutations occur in the germ tract. Proc. Soc. Exp. Biol, and Med. 



17:1-2. M. Demerec. 1931. Behaviour of two mutable genes of DeZ- 



phinium ajacis. J. Genet. 24:179-193. M. Demerec. 1936. Unstable 



genes. Bot. Rev. 1:233-248. M. Demerec. 1937. Frequency of spon- 

 taneous mutations in certain stocks of Drosophila melanogaster. Genetics 



22:469-478. M. Demerec. 1938. Eighteen years of research on the 



gene. Carnegie Inst. Wash. Publ. 501:295-314. M. Demerec. 1941. 



Unstable genes in Drosophila. Cold Spring Harbor Symposia on Quant. 

 Biol. 9:145-149. R. A. Emerson. 1914. The inheritance of a recur- 

 ring somatic variation in variegated ears of maize. Amer. Natur. 48:87-115. 



D. F. Jones. 1936. Mutation rate in somatic cells of maize. Proc. 



Nat. Acad. Sci. 22:645-648. B. P. Kaufmann and M. Demerec. 1937. 



Frequency of induced breaks in chromosomes of Drosophila melanogaster. 

 Proc. Nat. Acad. Sci. 23 A84r-488. 1. Manton. 1935. Some new evi- 

 dence on the physical nature of plant nuclei from intra-specific polyploids. 



Proc. Roy. Soc. B 118:522-547. T. H. Morgan and S. C. Tice. 1914. 



The influence of the environment on the size of expected classes. Biol. Bull. 



26:213-220. M. M. Rhoades. 1938. Effect of the Dt gene on the 



mutability of the ai allele in maize. Genetics 23:377-395. A. D. 



Shamel, L. B. Scott, and S. C. Pomeroy. 1918. A study of bud variation 



in the navel orange. IJ.S.D.A. Bull. 623:1-146. G. H. Shull. 1921. 



Three new mutations in Oenothera Lamarckiana. J. Hered. 12:354-363. 



W. P. Spencer. 1935. Visible mutations in Drosophila. Amer. 



Natur. 69:223-238. N. W. Timofeeff-Ressovsky. 1934. Uber die 



Vitalitat einiger Genmutationen und ihrer Kombinationen bei Drosophila 

 funebris und ihre Abhangigkeit von ''genotypischen" und von aiisseren 



Milieu. Zeits. f. indukt. Abstamm.- u. Vererb-lehre 66:319-344. H. 



P. Traub and T. R. Robinson. 1937. Improvement of subtropical fruit 

 crops: citrus. U.S.D.A. Yearbook Agric. 1937:749-826. 



CHAPTER 16 



E. Altenburg. 1933. The production of mutations by ultra-violet light. 

 Science 78 :587. W. H. Brittingham. 1931. Variations in the evening 



