370 



I'HYSlOUXiKAL (1KNETIC8 



Critical period (.sec Sensitive period: 



Crossovers, 292 



Crustacea, asymmetry of claws, 227 



Cubitus interrupt us, 312 



Cvcurbita ptpo, 217 



Cyclopia, 47 



Cynthia moth, experiments on wing 



pattern, 247 

 Cytoplasm, diseased, 269 



influence of, 56 



and nucleus, 263 



and sex, 278 

 Cytoplasmic genes, 279 

 Cytoplasmic heredity in mosses, 271 

 Cytoplasmic influence upon gene- 

 controlled characters, 270 



1) 



Dahlia, flower color, 169 



Dahlia variabilis, 98 



Datura, 151, 213 



Dauermodification, 276-277 



Deer horns, 77 



Deficiencies, 133, 147, 176, 287, 298, 



307, 313 

 Deletions, 147 



Determination stream, 193, 195-196, 

 198, 200, 230, 239-240, 245, 

 253, 255, 261 

 Development, potentialities of, 3 

 Diffusion, of gene-controlled prod- 

 ucts, 180 



of growth substances, 190 

 Dogs, spotting in, 258 

 Dominance, 65, 99 



change of, 99, 112, 161 



coefficient, 104-105 



and development, 99 



and environment, 102 



phylogenetic theory, 109, 121-122 



temperature shocks, 107 



theory of, 100 



and threshold, 103 

 Dominigenes, 62, 107, 129, 306, 312 

 Dosage, 312 



changes, 137, 151 



compensation, 130, 131 



Dosage, differences, 154, 285 

 and whole chromosomes, 147 

 by X-chromosomes, 125 

 Drosophila funebris, asymmetry, 



223 

 dominigenes, 109 

 maternal inheritance, 207 

 phenocopies, 5 

 venae transversae, 71 

 Drosophila melanogaster, asymme- 

 try, 222, 225, 230 

 Bar-eye series, 11, 31-32, 44, 46, 

 73, 76, 89, 104, 106, 120, 128, 

 135, 137, 139, 147, 154, 167, 

 215, 284, 297, 304-305, 312 

 bobbed series, 118, 136, 145 

 bristle pattern, 240 

 bristles, 19, 46, 222 

 deficiency, 299 



See also Deficiencies 

 dominance, 116 

 dominigenes, 22, 107-108 

 duplication, 137, 147, 307, 313 

 eggs, 280 

 eye-colors, 32, 34, 91, 115, 132, 



164, 173, 175, 183, 307 

 eye-mutants, 26, 30, 34, 75 

 fourth chromosome, 147, 149, 151 

 haploid tissue, 44 

 hybrids, 108 

 intersexes, 125, 189 

 larval characters, 207 

 legs, double, 70 

 maternal inheritance, 207 

 mosaics, 177, 182 

 mutants, abdomen rotatum, 225 



abnormal abdomen, 70, 134 



achaete, 199 



aristapedia, 36, 208 



beaded, 192 



bithorax, 208 



chubby, 38 



claret, 175 



crippled, 70 



cubitus interruptus, 306 



Dichaete, 73, 85 



dumpy, 231 



expanded, 191, 212 



