SUBJECT INDEX 



371 



Drosophila melanogaster, mutants, 

 Facet-notch, 297 

 giant, 36 

 Gull, 109 

 Lobe, 114, 164 

 lozenge, 86 



miniature, 176, 191, 212 

 Minute, 46, 162, 164, 175, 313 

 Paletranslocation, 132 

 Plum, 307-308 

 proboscipedia, 208 

 short wing, 81 

 tetraptera, 70, 208 

 truncate, 87, 116, 191, 230 

 origin of mutants, 313 

 pattern, 228 

 phenocopies, 5, 9, 45, 56 

 pigment races, 91 

 pleiotropy, 81 

 rates, 73 



Russian race, 123 

 Scute series, 72, 116, 235, 237, 239, 



295, 303, 306, 312 

 sensitive periods, 76 

 sex-differences, 132 

 species, 66 



temperature effect (see pheno- 

 copies, Bar, scute, vestigial) 

 transplantation, 117, 133, 185, 187 

 unstable genes, 290 

 vestigial series, 12, 17, 25, 26, 30, 

 42-43, 46, 54, 56, 58, 62, 66, 

 69, 74, 76, 79, 83-84, 87, 103- 

 104, 109, 118, 123, 129, 139, 

 190, 216, 222, 226, 228, 238 

 wing, 161, 212, 217, 234 

 Drosophila obscura, 86, 107, 165 

 Drosophila pseudoobscura, 207 

 Drosophila simulans, 108, 183 

 Drosophila virilis, 176, 290 

 Drosophila willistoni, 86 



E 



Embryology, experimental, 46 

 Embryonic fields, 179, 202, 204 

 Embryonic segregation, 204 



Ephestia kuhniella, 10, 20-21, 23, 45, 

 79, 127, 183-184, 196, 233, 243- 

 244, 246-247, 250-251, 253, 261 



Epilachnia chrysomelina, 247 



Epilobium, 274-275, 278-279 



Episomes, 297 



Epistatic minimum, 66, 68 



Eumelanin, 34 



Evocator, 202-205, 221 



Exaggeration, 133, 137 



Expressivity, 66 



Eye, human, anomalies of, 41 



Feather, development, 34, 218 



growth, 218 



pigment, 218, 261 

 Ferns, variegation in, 291 

 Fetalization, 41 

 Fiddler crabs, claws of, 221 

 Fishes, pattern of pigment, 259 

 Flax, male sterility in, 279 

 Flour moth (see Ephestia kuhniella) 

 Flower colors, chemistry of, 94 



dominance, 114 



interaction, 169 

 Fowl, creeper, 25, 214 



dominigenes, 109 



frizzle, 107 



rumpless, 10, 25-26, 46, 107, 214 

 Frog, 179 

 Funaria, 153 

 Fundulus, 47 



G 



Galeopsis tetrahit, 55 

 Gammarus, 34, 39, 46, 53, 206 

 Gastropacha, 233 

 Gene, action in cell, 264 



activation, 263, 265 



aggregate, 295 



autocatalyst, 282 



balance, 133, 152 



chemical models, 299 



chemical processes controlling, 99 



