560 Subject Index 



and hermaphroditism, 436 £F., 443 fiF., 

 451 ff., 462 fF., 470 



Melandrium, 436 ff., 443 ff., 470 



protandric, 462 



Streptocarpus, 455 



trematodes, 451, 463 

 Mosses, plasmon, 211 

 Mouse 



chromosomes, 32 



luxated, 491 



molars, 362 



multiple factors, 362 ff. 



mutants, 174, 175, 385 



physiological genetics, 362, 369 ff. 



pleiotropy, 369 ff., 387 



tail, 174, 175 

 Mutable loci, 106, 145 

 Mutants 



amorphs, 343 



antimorphs, 343 



biochemical, 174, 272 



collaboration of, 385 ff. 



neomorphs, 343 



opposite deficiency, 343 



temperature-sensitive, 257 

 Mutation 



bacteria, 103, 174 



chemically induced, 45, 104 



chromosomal, 114, 115, 127, 145 



consecutive, 144 



after crossing, 144 



cytoplasmic, 222 ff. 



as deficiency, 141 ff. 



mass, 144 



and mosaicism, 89, 104 



by mutators, 143 ff., 236 



oxygen effect, 103, 117 



point, 127, 128, 131, 141, 159 



as position effect, 118, 119, 127, 128, 

 131, 141 ff., 157, 186 ff. 



radiation-induced, 101, 102, 105, 108, 

 109, 114 ff., 127 



rate, 102, 142 



rearrangement, 114 ff., 127, 145 



return (reverse), 105 ff., 149, 153 



systemic, 489 ff. 



target theory (Treffer), 100 ff., 

 107 ff., 115, 117 



temperature coefficient, 102, 178, 257 



temperature shocks, 144, 258, 366 



theory of, 42, 102, 103, 105, 114 ff., 

 187 ff. 



ultraviolet-induced, 118 

 Mutators, 89, 143 ff., 236 



Nadsonia, 144 



Nematodes, cell constancy, 68 



Neo-Darwinism, 480 ff., 491 



Neurospora 



biochemical mutants, 106, 171, 174, 

 250, 271, 366, 371 



one gene — one action, 366, 371 



one gene — one enzyme, 250 



pseudoallelism, 171, 174, 271 



return mutation, 106, 107 



suppressors, 174 



temperature-sensitive mutants, 107, 

 287, 366, 374 



threonineless mutants, 397 

 Norm of reaction, 255, 256 

 Nuclear elimination, 276, 308. See RNA 

 Nuclear membrane, 276, 308 

 Nucleolus, 277. See RNA 

 Nucleus 



and cytoplasm, 276 



intranuclear genie products, 275, 297, 

 301, 309 



polyenergid, 301 



polytene, 297, 300 



sap, 278 

 Nun moth. See Lymantria monacha 



Oenothera 



cytoplasm, 211, 214, 234, 235 



paternal cytoplasm, 214, 235 



plastids, 232, 234, 235 



variegation, 234, 235 

 Oligochaetes, 54 

 Oniscoids, 466 ff. 

 Oocyte 



Amphibia, 20 ff., 28, 43, 44, 214, 

 275, 276, 298 



Bryozoa, 54 



chromosomes, 22, 23, 28, 43 



DNA, 23, 28, 43, 54, 275, 307 ff. 



Dyticus, 65 



germ-track determiners, 237 



Giardina ring, 65. See Giardina 



growth, 54 



insects, 54, 63, 65 



lampbrush chromosomes, 20 ff., 28, 

 43, 275, 298. See also Chromo- 

 somes 



microsomes, 305 ff. 



mitochondria, 28 



nuclear discharge, 275 



nuclear membrane, 276 



nurse cells, 54, 298 



oligochaetes, 54 



