Subject Index 563 



multiple crosses. See Lymantria 



multiple factors, 433, 466 ff. 



Oniscoids, 466 ff. 



Ophrtjotrocha, 464 



parthenogenesis, 238, 474 ff. 



phenotypic determination, 256, 461 ff. 



plasmatic action, 199, 200 



Podospora, 472 



Rumex, 436 



Salix, 456 



Scarabaeus, 58 



Schistosomum, 451, 452, 463 



Sciara, 63, 64 



Secale. See Rye 



sex-controlled heredity, 357, 427 



silkworm, 91, 199, 338, 433, 446 



Solanum, 456 



Solenobia, 94, 458 ff. 



Sphaerocarpus, All 



Streptocarpus, 93, 200, 207, 217, 218, 

 454 ff. 



and symbionts, 465 



Talaeporia, 238, 465 



trigger action, 426, 429 



Ustilago infection, 438, 439, 441 ff. 



variegation, 93 



Wedlia, 463 



worms, 463 



Y-chromosome, 75, 91 ff., 199, 200, 

 338, 427 ff., 441 ff. 

 Silkworm 



diapause, 265 



hormones, 265, 405 ff. 



maternal heredity, 198, 199 



molting, 265, 405 ff. 



mosaics, 198 



sex determination, 91, 199, 338, 433, 

 446 



Y-chromosome, 91, 199, 338, 433, 

 434, 446 

 Snails, sinistrality, 198 

 Snapdragon. See Antirrhinum 

 Solenobia, 94, 447, 458 ff. 

 Sperm motility, 442 

 Sphaerocarpus, 472 

 Stentor, 228, 301 ff. 

 Step-allelomorphism, 112, 400, 486 

 Streptocarpus. See Sex 

 Subnucleus, 301 

 Suppressors, 105 



Talaeporia, 238 



Tapetum cells, 54, 295 



Target theory, 100 ff., 107 ff., 115, 117 



Teloblasts, 290 

 Temperature action 



critical period, 366, 374, 401 



dominance, 366, 374 



mciosis, 238 



molting, 405 ff. 



mutation rate, 102 



pattern of Lepidoptera, 257 ff. 



phenocopies, 428 

 Templates, 8, 9, 13. See also DNA, as 



template 

 Tenebrio, 58 

 Testosterone, 189 

 Tetraltera. See Drosophila 

 Translocations 



homozygous, 183 



position effect, 183 

 Transpeptization, 24 

 Treffer theory. See Mutation; Target 



theory 

 Trichoniscus. See Oniscoids 

 Triton, 325 ff. 

 Trophochromatin, 278, 305 



Ustilago, 438, 441 ff. 



Vanessa levana-prorsa. See Araschnia 

 Vernalization, 203, 256, 408 

 Virus, 49, 56, 220 ff., 227, 240, 241, 

 244 



Wedlia, 463 

 Wheat, 490 

 Wound hormones, 326 



Yeast 



cytoplasmic heredity, 207, 222 ff. 

 cytoplasmic mutation, 222 ff. 

 genetics, 242 



mitochondria, 207, 224, 225 

 respiratory enzymes, 207 

 Y-chromosomes. See also Chromosomes; 



Heterochromatin 

 Drosophila, 71 ff., 80, 82, 85, 87, 89, 



92, 93 

 extra Y's, 75 ff., 80, 82, 85, 87, 162 

 fertility factors, 75, 442 

 heredity in, 91 

 heterochromatin, 75 ff., 80, 85, 87, 



92, 93, 445 

 Lymantria, 91 ff., 199, 200, 216, 



336 ff., 428 ff., 446, 467, 474 

 Melandrium, 75, 76, 435, 437 ff., 471 

 sex factors, 75, 91 ff., 199, 200, 338, 



427 ff., 441 ff. 



