466 



INDEX 



tissue, 176, 178, 265, 267-268 



culture, 141,265,267, 317 

 tobacco (Nicotiana), 63 

 tobacco mosaic virus (TMV), 304, 382, 404-406, 



448 

 toes, 71, 265 



traits, continuous (quantitative), 56-60, 104, 108, 262 

 transduction, genetic, 374-380, 377, 421 

 transformation, genetic, 340-347, 352, 379-380, 444- 



445, 449^50 

 transformer (tra), 101, 105 

 transition vs. transversion, 401, 402 

 translocation, 156-757, 760, 769, 173, 775-777, 180, 



209 

 transmission genetics, 8, 56, 66, 71, 73, 84, 112, 162, 



340-341 

 transplantation, 265, 111-21A, 442 

 transposition, 158, 173, 218, 220 

 triplet code, 434-435, 448 

 triplets, identical, 74 

 triploidy, 702, 139, 140, 144, 147 

 trivalent homologs, 102, 103, 259 

 trypsin, 287, 288, 328, 382, 406 

 tryptophan, 284, 285, 336, 376 



synthetase, 284, 286, 291 

 tuberculosis, 77, 78, 306, 307 

 Turner's type female, 98, 146 

 turnip yellow mosaic virus, 383, 404 

 turnover, atomic, 303 

 twin mutant spots, 275 

 twins, human, 32, 33, 74-79, 76 

 typhoid, 375 

 tyrosine, 276, 277, 285 

 ultracentrifugation, 312, 314, 340, 346 

 union, cross- (nonrestitutional, exchange), 150, 180, 



181, 185,371 

 unit. Angstrom (A), 286 



chemical, 403 



map, 124, 353-354 



mutational, 197,213,403 



sedimentation, 428 

 United Nations' report, 247 

 U.S.S.R., 108, 248 



United States, 239, 247, 248, 253, 254 



univalent, 26, 120 



uracil, 296, 303, 304, 325, 326, 401, 433^36, 445 



5-bromo or 5-fluoro, 325, 326, 400-401, 448, 450 

 urine, 274, 275, 277 

 v+ substance, 273 

 vaccinia, 307, 403 

 valine, 285, 287 

 variance, 58 



variation, 2, 7, 73, 78, 235 

 variegation, 186, 214, 275, 276, 277, 275, 371 

 vegetative phage, 384 

 Venus, 442 



vermilion eye color (v), 193, 195, 206, 207, 111-114 

 vertebrae, 267 



vestigial win^s i^vg), 116, 244 

 viabihty, 9, 66, 128, 129, 239, 240 

 Vibrio, 380 

 virulence, 384, 390 

 virus, 304, 332, 341, 352, 353, 356, 357, 381, 403-404, 



410,412^13,441,447 

 water, 214, 256, 281, 307, 308, 441, 442 

 water shrimp (Artemia), 140, 317 

 Watson-Crick model of DNA, 308 (see also DNA) 

 waxy, 221 

 wheat, 143, 296 

 white eye (w), 62, 65, 69, 83, 114, 117, 119, 122, 128, 



186,206,207 

 wild-type, 65 

 X chromosome, 81, 90, 91, 97, 100, 146, 204, 205, 



206, 207 

 Xanthomonas, 341 

 X ray, 176-180, 779, 200, 206, 349 {see also radiation, 



mutation) 

 X ray diffraction pattern, 307, 308, 340 

 Y chromosome, 81, 90, 91, 100, 106, 1 14, 146, 175, 



182, 186,206, 371 

 yak, 257 

 yeast, 307, 429 



yellow body color {y), 1 17, 1 19, 128, 188, 189, 206, 207 

 Zea {see corn) 

 zygonema, 24 

 zygote, 5, 354 



