INDEX 



655 



CHROMOSOME— (CO w^^.) . 



structural differentiation, 303 et 

 sqq. 



structure, 32 



supernumerary, 142 



survival, 71 



theory, see theory. 



thread, 22, 34 



unpaired, 98, 376 



vesicle, 45, 89 

 Chrysanthemum, clonal forms, 319 



hybrids, 171, igj, 208 



non-pairing, 404 



non-reduction, 192, 416 



polyploidy, igi 



syndiploidy, 66 

 Chrysopa, 36 j , 374 . 

 Circotettix , 77, 247, 261 

 Citrus, 2iy, 440 



somatic doubling, 66 

 Cladocera, 471 

 Cladophora, 6, iii 

 cleavage, 41, 45 



division, 533, 541 



surface, 484 

 CLONE, 218, 3ig, 323 



old, 421 



See also species. 

 Coccidae, jyy, 379, 381 



spindle, 543 

 Cocconeis, 442, 450 

 Cochlearia, 220 

 coefficient, of hybridity, 271 



terminalisation, 505, 513 

 COILING, direction, 488 



relational, chromatid, 25, 27, 271, 



483 

 chromosome, 93 et sqq., 100 et 

 sqq., 166, 177, 428 

 and crossing-over, 259, 548 

 et sqq. 

 in salivary glands, 177 

 and structural change, 558 

 See also spiral, spiralisation. 

 Coleoptera, 36^ 

 Coleotrype, 80 

 Commelina, 80 



comparative method, 563 et sqq. 

 competition, in chiasmata, 402 



between embryo sacs, see Renner 



effect, 

 in nucleolus-formation, 305 

 in pairing, 199, 206 

 in spindle formation, 523 

 between zygotes, 318 et sqq. 



se3 chromosome. 



COMPLEMENT. 



balance, 

 complex heterozygote, see 



heterozygote. 

 complex hvbrid, see hybrid. 

 CONDENSATION, see differential 



condensation. 

 CONGRESSION, 523 

 conjecture, see theory. 

 CONJUGATION, of gametes, see 

 fertilisation. 



distance, 367, 374, 375, 528 

 conjugate nuclei, 10 

 CONSTRICTION, 34 et sqq., 536 



nucleolar, 23, 27, 59, 305, 485 

 CO-ORIENTATION, see orientation. 

 Coregonus, XIV 

 correlation, negative, chiasma 

 frequency, 293 

 fertility, 196 

 Correns, 384 

 Cotoneaster, 242 

 Cratagus, 212, 2iy 

 Crepis, autosyndesis, 202, 208 



chromosome length, 56 



chromosome numbers, 220, 231 

 et sqq. 



haploid, 444 



hybrids, 184 et sqq., 276 

 chromosome size, 57 

 pairing in, 163, iy2, 1^4, 208, 400 

 trabants, 305 



inversions, 2y4 



non-pairing, 400 



nucleoli, 306 



phylogenetics, 172 



progeny of triploids, 320 



somatic doubling, 64 



trisomic, 3ig 

 Crepis artificialis, 242 

 Crepis capillaris , chromosome shapes, 

 44, I 



chromosome length, 57 



chromosome number, 82 



haploid, 416, 418 



polyploidy, 62, igi 



population analysis, yo 



syndiploidy, 66 



X-rayed, 430 



X-strain, 400, 404 

 Crepis capillaris X lector uyn, 199 

 Crepis tectorum, chromosome shapes, 

 44 



old seed, 420 



population analysis, yo 



