556 Subject Index 



transformation and transduction, 47, 

 50, 51, 56 

 Dominance 



as dosage, 363 S., 378 ff. 



Fisher's theory, 377 S. 



by modifiers, 132, 363 fF., 375 ff., 385, 

 447 



as physiological phenomenon, 363 ff. 



as potency, 363 ff., 378 



and sex, 447 



temperature action, 366 



Wright's theory, 365 ff. 

 Dosage 



in allehsm, 341 



in Bar eye, 125, 345 ff., 355 



via chromosomes, 356, 383 ff. 



compensation, 356 ff. 



cubitus interruptus, 138, 348 ff. 



multiple factors, 353, 360 ff., 397 



and position effect, 125, 139, 350 ff. 



in sex determination, 335 ff. 



in sex linkage, 356 ff. 



wing of nun moth, 357, 360 

 Drift, 480 

 Drosophila 



aristopedia, 179, 182, 410 ff. 



artificialis, 184 



Asymmetric, 381 



Bar, 24, 121 ff., 180, 345 ff., 359, 386 



baroid, 121 



Beaded, 77, 85, 89, 93, 200, 378 



Beadex, 24, 125 



bithorax, 170, 172 



bobbed, 82, 343, 368 



CO2 sensitivity, 219 



chromocenters, 71, 74, 79, 83 



chromosomal breaks, 118, 119, 130 



cubitus interruptus, 136 ff., 151, 

 349 ff., 368, 370, 378 



developmental time, 400, 412 ff. 



dominance modifiers, 132, 378, 447 



dosage experiments, 125, 138, 343, 

 345 ff., 349 ff., 356 ff., 378 



eye-color biochemistry, 250, 394 



evolution of chromosomes, 184, 185 



extra bristles, 361 



heterochromatin, 71 ff., 83 ff., 92, 

 128 ff., 151 



homoeotic mutants, 77, 87, 88, 182, 

 264, 361, 379 ff., 410 ff., 412 ff. 



imaginal discs, 417 



intersexes, 93, 94, 200, 337 ff., 447, 

 456. See also Sex 



karotype, 482 ff. 



lethals, 400 ff. 



Minutes, 84, 85, 92, 141, 142, 144, 



200, 353, 386, 395 

 modifiers, 396, 447 

 mottling, 79, 81, 93, 94, 128 ff., 151 

 multiple factors, 86, 360 ff. 

 mutation after crossing, 145 

 mutators, 89, 143, 144, 151 

 Notch, 118, 142, 143 

 nurse cells, 54, 294, 298 

 penetrance, 88, 378 ff. 

 phenocopies, 257, 258, 262 ff., 410 

 pleiotropy, 396 

 podoptera, 75, 77, 83, 87 ff., 93, 264, 



379 ff., 394, 412 ff., 490 

 polygenic blocks, 75, 85 ff., 360 ff. 

 polyteny, 109 

 position effect, 22, 79, 83, 126, 132, 



133, 151, 170, 173 

 repeats, 84, 172 

 repleta, 93, 200, 454, 456 

 reverse mutation, 106 

 salivary chromosomes, 19, 22, 23, 34, 



71 ff., 84, 85, 109, 116, 296, 485 

 selection, 87, 88, 362 

 sex determination, 92 ff., 200, 337 ff., 



432 ff., 458 

 silver, 126, 174, 396, 399 

 species, 32, 184, 185, 482 ff. 

 sperm tails, 289 

 spermatheca, 417 

 suppressors, 105, 174, 396, 399 

 tetraltera, 77, 388, 412 ff., 490 

 transformer, 356 

 triploids, 337 ff., 343, 458 

 vestigial, 132, 371 ff. 

 X-chromosome, 71 ff., 79, 83, 92, 93, 



337 ff., 356 ff. 

 Y-chromosome, 71 ff., 80, 82, 85, 87, 



89, 92, 93 

 Dubinin effect, 136 ff. 

 Duplication 

 covering, 134 

 and phylogeny, 167 ff. 

 in pseudoallelism, 167 ff. 

 Dyticus, 65 ff., 291 



Ecballium, 445, 455, 456 

 Embryogenesis, chemical, 330 

 Endomitosis. See also Chromosomes, 

 polytene 



and determination, 54, 292, 293 ff. 



insect hairs, 294 



insect scales, 293 ff. 



