434 



INDEX 



Drosophila (fruit fly), non-disjunction, 

 382, 383 



sex-chromosomes, 360 ff. 



sex-linkage, 380 

 Drosophilidse, 349, 350 

 Druery, 311 

 Druner, 181, 183 

 Druse, 134, 135 

 Dublin, 255 

 Dubreuil, 121 

 Duesberg, 115-120, 361 

 Dujardin, 11 

 Dupler, 295 



Duplex chromosome group, 340 

 Duplicate factors, 343 

 Dytiscus (beetle), 237 



E 



Eames, 295 



and Hayes, 135, 333 

 East and Jones, 352 



Echinoderm hybrids, 160, 163, 325-327 

 Echinus (sea urchin), 160, 325 

 Ectocarpus (brown alga), 222, 314 

 Ectoderm, 329 

 Ectoplasm, 42, 44, 45 

 Ectoplast, 25, 43, 44, 85 

 Egg, segmentation in animal, 188, 189 



fragments, 287 

 Eisen, 66, 155 

 Elceis (palm), 134 

 Elaioplast, 109, 110 

 Elasmobranchs, 239 

 Elastin, 194 



Electrical charge of nucleus and 

 cytoplasm, 62, 184 



phenomena in egg, 287 



theories of mitosis, 184 

 Elementalism, 12, 411 

 Elodea (angiosperm), 37, 122, 356 

 Emberger, 122 

 Embryo sac, 299 

 Embryogeny (see Development) 



historical, 13, 15 

 Embryonal mitosis, 278, 295 ff. 

 Embryonic cells, 137 

 Emerson, 135, 302, 333, 384, 391 

 Emulsion, 34-36, 44 

 Emulsoid, 35 

 Enchenopa (bug), 237 

 Enchylema, 33, 34 

 End piece, 275 

 Endoderm, 329 



Endoplasm, 42, 44 



Endosperm, development of, 302 



mosaic effects, 302 



nuclear behavior in, 300-301 

 Endospore, 195, 196 

 Energy change in cell, 26, 52, 70 

 Entelechy, 412 

 Enteroxenos (mollusk), 237 

 Entz, 83, 84 

 Enucleated cells, 69, 70 

 Environment and development, 411, 413 

 Enzyme, 39 



Ephedra (gymnosperm), 295 

 Epigamic sex-determination, 357 

 Epigenesis theory, 4 

 Epithelial cells, 30, 83, 96 

 Equational division of chromatin, 156, 



226, 228, 401 



Equisetum (pteridophyte), chromosome 

 tetrad, 248 



dicecism, 356 



spermatogenesis, 90-92, 95 



spore coat, 196 



stem, 135 

 Ergatule, 49 

 Erhard, 96 

 von Erlangen, 189 

 Ernst, 300, 301, 315 

 Erysiphe (fungus), 80, 81, 290 

 Escoyez, 79, 87, 210 

 Etiolation, 105 

 Euchlcena (angiosperm), 349 

 Eudorina (green alga), 112 

 Euglena (flagellate, eyespot, 112 



flagellum, 45 



mitosis, 209 



paramylum, 108 

 Euschistus (bug), 237 

 Exine, 196 

 Exospore, 195, 196 

 Extruded chromatin, 136 

 Eye color in Drosophila, 380 

 Eyespot, 46, 84, lllff., 112 



Factor (see Gene), 333, 334, 336, 353, 



409, 410 



Factorial hypothesis, 343, 410 

 Farlow, 311 

 Farmer, 220, 248 



and Digby, 136, 239, 312-315 



and Moore, 237, 239 



