55 i 



INDEX 



thiamin < vitamin B,), 108 109 



thymidine, 2^~. 2.">s 



kinase. 503 



thymidylate synthetase, 44 i >. 501 

 thymidylic acid, 

 thymine, 254, 2"> 



dimers, 396, J97 

 mutagen, 392 

 thyroxine, 505 

 tinv yeast colonies, 378 

 Tipula, 4 l >3 



tissue culture. 84, 180, 427 

 toad (Xenopus), 427, 4 l M 

 tobacco (Nicotiana), 60-62 

 I \l V i tobacco mosaic \ irus ). 

 $40, 363 365, 304, 365, 

 442. 453 

 toes. 72, 7:5. "4 

 tomatoes. I 29 

 traits, qualitative \s. quantitative, 



62-65 

 trans position. 349, 477. 478 

 transcription. 425. 454-455. 461. 

 512 



differential, 502 



and differentiation, 502-503 



one-complcmcnt. 426 



unit. 460 

 transduction, genetic. 330-336, 



333, 334, 388 

 transfer RNA {see RNA) 

 transformation, genetic, 295-300, 



303, 336 

 transformer, 102, 103, 488 

 transition. 398 



translation. 425. 461. 481. 512 

 translocation. 237-238 



half-. 172. 237 



reciprocal. 170, 171, 175, 183, 

 234 236, 234, 486 

 transplantation of eye anlage, 422 

 transposition. 174, 466, 469 

 trans\ersion. 398 

 triplet. 462 

 triploid. 104. 151 

 trisomic. 156 

 Triturus. 495 



trivalent, 156. 248 

 tropical VS. temperate. 384 

 1 1 \ panosoma, 379 

 trypsin, 289, 412 413 



triptophan, swithctase. 410 411. 

 442. 504 



pyrrolase. 504 

 tuberculosis. 77, 78, 266 

 tulips. 247 



Turner's syndrome. 107 

 twin method. 37 

 twin patches of kernels, 467 

 twins. 36, 38. 74-79. 76 



in cattle. 504 

 typhoid, mouse, 330 



ultracentrifugation, 273, 274 

 ultraviolet light (UV). 179. 360 



-induction. 335, 350 



and mutation. 192-193, 396- 

 397 



on polyuridylic acid. 448 

 univalent. 16 



unselected markers. 313, 314 

 uracil. 255, 262, 284 



5-bromo, 284, 392-393, 453 



in DNA, 452, 453 



dimers, 397 



5-fluoro, 431 



tautomers. 394 



variables, discrete, 520, 521-534 



indiscrete. 534-537 

 variance, 63, 535 

 variegated (V-type) position ef- 

 fect. 474, 486 

 vegetative nucleus. 26 

 ventral receptacle. 24 

 Venus. 514. 515 



viability, 69, 70 {see also mutant) 

 Vibrio, 336 



Vicia jaba (broad bean). 453 

 virus {see also bacteriophage) 



herpes. 388. 503 



infectious bovine rhinotrache- 

 itus, 452 



influenza, 363 



lipo-. 500 



measles. 389, 503 



morphology. 339, 340 



as mutagens. 388-389 



polio-. 363. 453 



polyoma. 445. 503 



pox-, rabbit. 369 



pro-. 455 



regulatory effects. 503 



reo-. 366 



Rous sarcoma. 388. 455 



simian. SV 4 „. 389. 503 



tobacco mosaic (sec TMV) 



turnip yellow mosaic, 340, 363 



vaccinia, 266. 426. 445 



wound. 366 

 visible light. 179 

 visibles. 198 

 vitamin B, (thiamin). 408-409 



war, nuclear, 225 



water shrimp (Artemia). 152 



watermelon. 25 1 



Watson-Crick model of DNA, 



267 {see also DNA) 

 wheat. 155. 251, 493 

 white region, 478, 479 

 wild type. 23 

 woolly hair. 38 



X-linked muscular dystrophy, 485 

 xanthine, 396 

 Xanthomonas. 297 

 Xenopus (toad), 427, 491 

 Xg locus, 139 



X ray diffraction pattern, 267 

 X rays and mutation. 180-185, 

 180, 181 



yak, 245 



yeast, 266, 378, 396, 452 



zygonema. 16 



zygote, 5 



zygotic induction, 335 



