INDEX 



541 



Dembowski, 172 



Demerec, 308, 310, 388, 398, 415, 416, 419 



Dendrite, 13, 14 



Deiidrucoelum (flatworm) , 258 



Denhatn, 342 



Dermatosome, 177 



Desynapsis, 273, 345 



Determinant, 442 



Deutoplasm, 100 



Development, 7 



and cells, 20 /. 



chromosome influence, 273 



gene theory, 309 



and heredity, 284 ff. 



Weismann's theory of, 442 

 Developmental selection, 293 

 Devis6, 71, 86, 151, 152, 171 

 Dextrin, 99 



Diakinesis, 257, 258, 260, 334 

 Diatoms, 228, 2S0, 386 

 Dictyokinesis, 75 

 Dictyosomes, 75, 216, 220 

 Dictyota (brown alga), 159, 227, 280 

 Didelpkys (opossum), 378, 379 

 Didymium (slime mold), 165, 172, 278 

 Dietel, 283 



Differential polyploidy, 340 

 Differentiation, 9 /., 443, 444 

 Diffuse stage, 261 

 Digby, apomixis, 402, 403, 404 



chromosome number and taxonomy, 126 



hybrids, 367 



nucleolus, 57, 58 

 Digestion, 89 



Digitalis (angiosperm), 346, 361, 363, 367 

 Dikaryon, 230 

 Dikaryophase, 230, 232 

 Dileptus (protozoan), 245 

 Dinophilus (annelid worm), 399 

 Dioecism, 388, 398 

 Dioncea (angiosperm), 18 

 Diospyros (angiosperm), 17 

 Dioon (cycad), 50, 206, 207, 234 

 Diplocystis (protozoan), 277 

 Diplodinium (protozoan), 10 

 Diplodization, 230 

 Diplohaplont, 278 

 Diplonema, 257, 258, 259, 264 

 Diplont, 278 

 Diplosis, 226 

 Dippel, 177 

 Dipsacacese, 129 

 Diptera, 122, 125, 272 



Disjunction, 250, 252, 255, 265, 272, 291, 322 

 Dislocation hypothesis, 347 

 Disney, 423 

 Dispermy, 347 

 Disperse phase, 33 

 Dispersions medium, 33 

 Dissosteira (grasshopper), 86, 256 

 Dixon, 256 



Dobell, 10, 21, 193, 277, 429, 436 

 Dobzhansky, 123, 187, 297, 320-325, 322, 324, 



329, 395, 399 

 Dodel, 100 



Dodge, B. O., 231, 278, 282, 283, 387 



Dodge, C. W., 196, 226, 231, 283 



Doflein, 27, 189 



Dogiel, 182 



Dolley, 51 



Dominance, 287 



Doncaster, 239, 256, 272, 380, 382, 410, 411 



Dore, 178, 179 



Double crossing-over, 300 



Double fertilization, 211, 236, 237, 238, 437 



Double reduction, 230, 281 



Doubt, 16 



Douin, 382 



Dowding, 387 



Downing, 213 



Dracinschi, 204, 205 



Drayton, 387 



Drew, 79, 184 



Driesch, 441 



Drosera (angiosperm), 339, 361 



Drosopkila (fruit fly), bar eye, 304 



black body, 294, 300 



carnation eye, 304 



chromonema, 139 



chromosome complement, 122, 129, 344 



chromosome map, 324 



crossing-over, 302, 303, 353, 393 



embryo, 24 



fragmentation, 316, 318 



gynandromorph, 382 



inversion, 320 



linkage, 294 



linkage groups, 296-298 



linkage map, 301 



meiosis, 295 



non-disjunction, 345 



polyploidy, 275 



reciprocal translocation, 329 



recombination, 304 



sex-chromosomes, 377, 378, 381 



sex-linkage, 391, 392 



synapsis, 272 



syngamy, 243 



translocation, 121, 317, 318, 321, 322, 323, 325 



triploidy, 353 



vestigial wings, 294, 300 



X-ray treated, 187 

 Druner, 160, 162 

 Druse, 102, 103 

 Dublin, 272 

 Dubreuil, 88 

 Duck, 381 



Duesberg, 73, 75, 82, 85, 87, 195, 379 

 Dufrenoy, 91, 98 

 Dujardin, 432 

 Dumas, 438 

 Dunn, 286 

 Dupler, 235 

 Duplex genes, 354 



Duplex group of chromosomes, 292, 325 

 Duplication of genes, 319, 322 

 Duplicational polyploidy, 340 

 Dutrochet, 20, 426-428, 435 

 Dyad, 252, 262, 264 



