INDEX 



533 



Darwin, F., 278 



Darwinism, see Natural selection; Social 



Darwinism 

 Darwin's finches, 292-296. 295, 487-488, 



489 

 David. P. R., 402 

 Davis, P. R., 227. 256 

 DDT, 401,451 

 Deer, 27. 220, 264. 491 

 Deer mouse, see Peromysciis 

 Deficiency in chromosome. 396. 397 

 Deletion in chromosome, 396, 397, 398 

 Deme. 427 

 Demerec, M., 328, 401, 402. 451, 481. 



482 

 Dentary bone, 172, 190 

 Dentine of teeth, see Teeth 

 Deoxyribose nucleic acid (DNA), 400, 



498 

 Development, rate of, 357 

 Devonian period, 15. 137. 155-163, 173 

 De Vries. H., 337, 338, 419, 436 

 Dewar, D., 44 

 Diapsida, 176-77S 

 Diastema, 199.203, 230 

 Dice, L. R., 316, 324, 325. 328. 365. 366, 



374 

 Difi"erences, see Diversity 

 Differential growth, see Allometry 

 Digits, see Limbs 

 Dimetrodon, 170-171 

 Dingo, 262 

 Dinichthys. 157 

 Dinosaurs. 137, 175 



duck-billed, 182 



evolution of. 176-187 



extinction of, 13, 184-185 



horned, 180, IS3-184 



orders of, 179-180 



plated, 183 



See also Ornithischia; Saurischia 

 Dinotheriiim. 2X2-213, 215 

 Diploe in proboscidea, 208. 212. 214 

 Diploid. 382, 385, 399, 400, 418, 419-42Q 



See also Polyploidy 

 Diplovertebron, 162 

 Dipnoi, see Lungfish 

 Discontinuity, see Ranges 

 Disease, 353 



resistance to, 357 

 Dispersal, center of, 268, 269, 271, 272, 

 326 



means of, 284-287, 290-291 



to oceanic islands, 284-287 



See also Barriers; Geographic dis- 

 tribution; Isolation, geographic 

 Display, 491-493 



See also Sexual selection 



Distribution, see Geographic distribution 

 Divergence, see Adaptive radiation 

 Diversity, development of. 325, 331-336, 

 341, 358-359, 473-474, 487. 489 

 genetic factors in, 375-402 



See also Genes; Mutations; Nat- 

 ural Selection; Speciation 

 DNA, see Deoxyribose nucleic acid 

 Dobzhansky, T., 251, 252, 256. 322. 325, 

 328, 360. 362, 402. 419, 420, 421, 

 425, 426. 427. 438, 442, 449, 451, 

 454, 455, 456, 460, 461-462, 463, 

 464, 466, 467, 478, 480, 481, 482, 

 483,486,506 

 Doniger, D. E., 120, 125 

 Dog. 220 



classification of, 115 

 coat density in. 421-422 

 epistasis in. 391, 392 

 limb of, 22-25 



See also Camivora; Serological 

 tests 

 Dogfish, 156, 157 



osmotic regulation in, 99 

 See also Shark 

 Dolichocephalic, 252 

 Dolphin, 15 



convergent evolution in, 30 

 Dominance, partial, 347 

 Dominant, see Genes 

 Dragonfly, 165, 167 

 Drepanid birds, 296-304, 299, 300, 301, 



302. 303. 488 

 Drepaniidae. 297, 300 

 Drepanis, 298, 300-301 

 Drift, continental. 282 



genetic. 254. 349-351. 360. 439-449, 

 485, 487. 490; irreversible, 442; 

 models of, 442, 444. 443, reversal 

 of, 442 

 Drosophila, 360, 450 

 bar-eyed, 457. 458 

 bithorax in, 424, 425 

 ebony, 369, 457. 458, 459 

 eye color in, 337, 350-351. 403-404; 

 red, 351, 404. 472; white. 351. 404, 

 472 

 junehris. 453; temperature races of. 



401,453.454 

 genetic assimilation in, 424 

 mating behavior of, 472, 475-476 

 melanogaster. 476 

 mutation rate in, 437, 501 

 and natural selection, laboratory ex- 

 periments in, 454-469. 475-476 

 persimilis, 475 



pleiotropic genes in, 350-351 

 pseudoobscura, 369, 460-461, 475 



