554 



INTRODUCTION TO CYTOLOGY 



Nawaschin, M., amphidiploidy, 367 



chromosome morphology, 115, 121, 124, 127, 

 128 



dislocation hypothesis, 347 



fragmentation, 320, 349 



heteroploidy, 343, 349 



hybrids, 301, 372 



translocation, 314, 321, 325 



X-radiation, 187 

 Nawaschin, S., chromosome morphology, 114— 

 119, 128, 446 



fertihzation, 236, 238, 437 



male nuclei, 210 



Sorodiscus, 190 

 Nebel, 133, 137, 139, 256, 260, 261, 265, 329, 335 

 Nebenkern, 88, 90, 216, 218, 219 

 Nebennucleoli, 56 

 Neck canal cells, 201 

 Nelumbo (angiosperm), 167 

 Nemalion (red alga), 280 

 Nematodes, 376 

 Nematus (saw-fly), 411 

 Nfmec, altered chromosomes, 186 



chloralized cells, 185 



dispermy, 347 



mitosis, 191 



nucleolus, 57 



nucleus, 52, 53, 55 



spindle, 161, 164 



spore wall, 181 

 Nephrodium (fern), 86, 233, 403, 404 

 Nereis (annelid worm), 221, 222, 238, 240, 



242-244, 247 

 Nerve cells, 13, 14, 83 

 von Neuenstein, 48 

 Neurofibrils, 13, 87 

 Neuromotor apparatus, 10, 19 

 Neurospora (fungus), 282, 387 

 Neuroterus (gall-fly), 411 

 Newport, 438 

 Newton, D., 386 

 Newton, W. C. F., 258, 267, 268, 274, 346, 



351, 352, 355, 367 

 Nichols, G. E., 206, 235 

 Nichols, S., 31 

 Nicholson, 89 

 Nicolosi-Roncati, 71, 82 

 Nicotiana (angiosperm), amphidiploidy, 367 



androgenesis, 407 



chimera, 343 



chromosome morphology, 124 



cytokinesis, 167 



cytoplasmic heredity, 419 



digluta, 367 



fragmentation, 320 



haploidy, 356, 402 



non-disjunction, 345 



pollen characters, 308 



tabacum, 365, 368 



temperature effect, 186 



X-radiation, 273 

 Nienburg, 230 

 Nieschulz, 223 

 Nigella (angiosperm), 129 

 Nigritella (angiosperm), 405 



Nikolaewa, 342 



Nishimura, 199 



Nishiyama, 293, 343, 366 



Nissl substance, 13 



Nitella (stonewort), 97, 279 



Nitophyllum (red alga), 280 



Nitzschia (diatom), 386 



Noack, 69, 90, 417 



Nodules of legumes, 90 



Noll, 22 



NoUer, 224 



Non-conjugation, 273 



Non-disjunction, 338, 344, 345, 393 



Non-division, 345, 346 



Non-homologous association of chromosomes, 



276, 316 

 Nonidez, 272 



Non-Mendelian inheritance, 415 ff. 

 Nor6n, 235 



Nostoc (blue-green alga), 192 

 Nothnagel, 153, 236, 237, 238 

 Nowikoff, 194 

 Nucellar embryo, 404, 405 

 Nuclear budding, 183 

 Nuclear fragmentation, 183 

 Nuclear membrane, 2, 136 

 Nuclear reticulum, 63, 105, 134, 136 

 Nucleic acid, 26, 27, 29 

 Nuclein, 26, 27 

 Nucleolo-centrosome, 189 

 Nucleolus, 2-59 ff., 118-121, 119, 164 

 Nucleome, 49 

 Nucleoplasm, 2 

 Nucleoplasmic ratio, 8, 51 

 Nucleo-proteins, 26, 140 

 Nucleus, 48-60 



of bacteria, 193, 194 



cell constituent, 2 



chemical nature, 52 



discovery, 427 



division, 105 ff. 



evolution of, 193 



fusion and heteroploidy, 346 



in heredity, 285, 441 



metabolic or resting stage, 59 



migration of, 403, 404 



origin by division, 432 



oxidation, 59 



in Protista, 189 ff. 



restitution, 346 



size and chromosome number, 51 



structure, 53 ff. 



synthesis, 58 ff. 

 NuUiplex, 354 

 Nurse cells, 213 

 Nussbaum, 74, 194, 195 

 Nymphaa (water lily), 83 



Oakley, 187, 317 



Obersteiner, 14 



Ochna (angiosperm), 402, 405 



Octoploidy, 339 



CEcanthus (cricket), 218 



