662 



INDEX 



Mecostethus, 261, XIV 



chiasma frequency, 294 



localisation, 99, no 



precocity, 309 



spiralisation, 28 

 MEGASPORE, see embryo-sac. 

 MEIOSIS, 5, 88 et sqq. 



abnormal, 372, 380, 460 et sqq. 



displaced, 377, 397, 448 



first metaphase, 106 et sqq., 

 525 et sqq., IV, VI, VIII, XIV 



and parthenogenesis, 451 et sqq. 



theory of, see theory. 



X-rayed, 428 

 Melandrium, 367 , X 



chromosome length, 56 



chromosome size, 55 

 Melanoplus, no, 261, 292, XVI 

 Meleagris, 81 

 Melopsittacus, 68 

 Mendel, 135, 245, 250 

 Mendelian principles, 138, 247, 335 

 Menexenus, 364 

 Mermiria, 140, 364 

 Mespilus, 242 



METAPHASE, of meiosis, 106 et 

 sqq., 525 et sqq. 



of mitosis, 23 



plate, 28, 235 et sqq., 497, 523, 525 

 accessory, 526 

 Metapodius, 142, 310, 313, 368, 392 

 Metzner, 536 

 Meurman, 158 

 Miastor, 58 

 MICROCHROMOSOME, see 



fragment, 

 microdissection, 35, 43 

 MICRONUCLEUS, 19, 50 

 microscopy, 569 

 MICROSPORE, see pollen. 

 Miltochrista, 78 

 mitochondria, 9 

 MITOSIS, 2, 22, 23 



abnormal, 395 et sqq., 420 



duration of, 30 



failure of, 63, 395 et sqq. 



gonial, 28 



and meiosis, 134 



multipolar, 64 



pollen-grain, II, III 



spirals at, XIII 



X-rayed, 427, XII 

 mitotic constants, 52 

 Mitrastemon, 94 

 Moffett, 238 



molecular change, see gene, 

 molecular orientation, 546 

 molecular spiral, see spiral, 

 molecular structure of spindle, 532, 



545 

 MoUusca, 7, 15, 67, 469 

 monaster, 535, 543 

 Monocystis, 48 

 MONOSOMIC, 6 J, 316 



Zea, X 

 Morgan, 250, 575 

 MOSAIC, 12, 68, 246 



haploid, 385 



sex, 385 



X-ray, 425 

 Mosses, see Bryophyta, Funaria. 

 MOTHER-CELL, 5 

 MuUer, 252, 286, 330 et sqq., 339, 



387, 422 

 multipolar mitosis, see mitosis. 

 MULTIVALENT, 120 et sqq., ig6 

 2ig 



anaphase, 411 



co-orientation, 131 



See also trivalent, quadrivalent, 

 etc. 

 Mus musculus, 115 

 Muscari, 37 

 mutation, 54, 167 



in apomictics, 475 



from crossing-over, 279, 345 



mass, 348, 352 



in (Enothera, 338 



in parthenogenesis, 298 



rate, 332 



and unbalance, 325 



unit, 333 



X-ray, 422 et sqq. 



Narcissus, 2iy, 318, 3ig, 402 



Nasturtium, 22y 



Natrix, 313 



natural population, see population. 



Navashin, M., 62, 71, 73, 420, 424, I 



Naville, 357, 374 



Nawaschin, S., 11, 35 



negative correlation, see correlation. 



Nematoda, 367 



Neottia, 307 



Nephrodium, 436 



Neuroptera, 367 



salivary glands, 175 

 Neuroterus, 376 

 Newton, 120, 189, V 

 Nezara, 358 



