INDEX 



super-gene, 46, u 8, 133. 312, 335 sqq. 



supernumerary, i>. chromosome 



suppressivcncss, 179 



suppressor, 158 



syndrome, 348 



syphilis, 358 



systematist, 323 



tabu, 253 



Talacporia, 264 



Taraxacum (dandeUon), 265 sqq., 344 



telocentric, 103, 104 



telophase, 25, 146 



temperature, effect of, 95, 100, 161, 178, 



195, 198, 216 

 template theory, 146, 211 

 tetrad, 32 



tetraploid, 95, 122 sqq., 134-S'?^- 

 Thomas, 212 

 Thyanta, 323 



Timofccff-Ressovsky, 159, 295 

 tissue specificity, 202 

 tomato, V. Lycopcrsicum 

 Torula, 212 

 Tradcscantia, 289 

 transformations, 80 

 translocation, 102, 106, 137 

 transplantation, 166, 191, 202, 212 



See also graft 

 Trichoniscus, 265 

 Trifolium, 246 

 triploid, 96, 265 

 trisomic, 96 



in Oenothera, 263 

 Triticum, v. wheat 

 Triton, 30, 99, 168, 290 

 Triturus, 99 

 trivalent, 121 

 tuberculosis, 349 



Tulipa, 100, 125 sqq., 139, 208, 311 

 tumour, V. cancer 

 twins, 269, 270, 349 



unisexual brood, 252 

 unity of heredity, 13055^. 



See also gene 

 univalent, 121, 137 

 unreduced germ cell, 34 

 Upcott, 125, I'iJ sqq. 

 Uvularia, 198 



vaccinia, 207 

 variability, 276 



and mutation, 295, 296 



fixed, 278 



flow of, 277, 285 



variability — continued 



free, 276 



frozen, 284 



potential 276, 279, 280, 287, 296 



reservoir of, 296 



states of, 281 

 variance, 59, 78, 82 sqq. 

 variation, 34, 272, 276 



continuous, 56, 61, 349 



cryptic, 323 



discontinuous, 55, 61 

 in man, 364 



non-heritable, 65 



spectrum of, 65, 66 

 variegation, 170, 186, 211 

 vector, V. virus 

 vegetative propagation, 16 

 Verbascum, 328 

 Veronica, 245 



versatile reproduction, 269 

 Verschuer, 349 

 Vicia, 168, 288 

 Vinca, 209 

 Viola, 241 



virus, 146, 149, 207 

 vector, 208 sqq. 

 vitamin, 160 sqq. 



Wallace, 273 

 wan, 214 

 Weismann, 29, 35 

 Wcttstein, 173 

 wheat, 64, 158, 259, 338 



speltoid, 338 

 Whiting, 113 

 wild-type, v. Drosophila 

 Wilson, 197 

 Winge, 205, 256, 340 

 Winkler, iii 

 woman, 347 sqq. 

 Wright, 203 



X chromosome, 46, 258, 330, 341, 346 



Xiphophorus, 51 



X-rays, 100, 146, 152, 213, 327, 331. 332 



Y chromosome, 46, 147, 151, 329. 33°! 



340, 341, 346 

 yeast, 179, 212 



Zea .Mays, 30, 45, 126, 147, 235, 242, 329, 

 330, 339. 340 



asynaptic, 288, 289 



embryo sac, 200 



mutation, 155 



pollen, 191, 198 

 zygote, 28, 145 



446 



