6=.8 



INDEX 



ENVIRONMENT, 12 

 epigenesis, 324 

 Epilobium, 535 

 equational exceptions, 285 

 equational separation, 252, 261 

 equilibrium, between chiasmata, 514 



chromatid, 497, 499 



hybrid ity, 271 



metaphase plate, 497, 524, 529 



molecular, 561 



pachytene, 549 



repulsion, 235, 531, 546 

 Eremurus, iii, 258, 306, III 

 Erlanson, 224, 460, 508 

 Ernst, 434 

 Erophila, igo, 228 

 EUCENTRIC HYBRID, see 



structural hybrid. 

 Enchlana, iy3, igi , 446 



See also Zea. 

 euchromatin, see heterochromatin. 

 Eucomis, 81 

 Euglypha, 21, 31, 49 

 Euphorbia, 238 

 Euschitus , 358 

 evolution, and apomixis, 470 



and chromosome numbers, 560 



and chromosomes, 75 et sqq. 



of genes, 328, 332 



and haplo-diploidy, 379 



and meiosis, 134 



and mutation, 246 



and permanent hybrids, 337 



and polyploid species, 220 et sqq. 



and secondary polyploids, 243 



and sex-determination, 388 et 

 sqq. 

 Evotomys, 368 



FACTOR, 245 



See also gene. 

 Felis, 78 



female, 18, 356 et sqq. 

 female gamete, see egg-cell, 

 ferns, see Pteridophyta. 

 fertility, and crossing-over, 291 



in QLnothera, 338 



of tetraploids, 186 



of triploids, 319 

 See also sterility. 

 FERTILISATION, 5 



double, II, 64 



failure of, 434 et sqq. 

 Festuca, 228 



interchange, 157 



Festuca — {contd.) . 



polyploid, igi 

 See also Lolium. 

 Feulgen reaction, 20, 46, 307, 312 

 Filaria, 9, 45 

 Fischer, 563 

 fixation, staining reaction, 307, 315, 



563 et sqq., 569 

 Flagellata, 4 

 flagellum, 9 

 Flemming, 22, 574 

 forces, 482 et sqq. 



inter-molecular, 493 

 Forficula, 161 

 Fourcrcsa, 306 

 Fragaria, haploid, 443, 446 



hybrid, igo, ig3, 2og 



interchange, 157 



sex, 358, 364 

 fragment, 27, 71, 72, 73, 143 



acentric, 268, 420 et sqq. 



elimination, 322 et sqq. 



inert, 330 



pairing of — s, 143, 287, 519 



supernumerary — s, 276 

 fragmentation, 59, 70, 77, 559 



heterozygote, 140, 162 

 Fritillaria, V 



coiling, 487, 4g2 



complement, 77 



crossing-over, 260 



diplotene. 259, 287, 552 



fragments, 72 et sqq., 143 

 pairing of, 146 



interrupted pairing, 100, 102 



meiosis, 92 et sqq. 



nucleoli, 98, 306 



pollen grains, 396, 525 



structural change, 560 



terminalisation, 506 



triploid, 216 

 Fritillaria imperialis, 98, 143, 287 

 Fritillaria Meleagris, no 

 frog, see Rana. 

 Frolowa, 176 

 Frullania, 314, 366 

 Fujii, loi, 485 

 Funaria, 466 



cell size, 221 et sqq. 



polyploid, 69, ig5 

 fungi, mitosis, 47 



spindle, 543 

 fusion, of chromosomes, 77, 239, 363, 

 559 



heterozygote, 140, 162 



