586 



Subject Index 



Hemp, 510 



Hermaphrodites, 66, 486, 495, 496, 



502, 507, 508, 509 

 Heterochromatin, 71, 77, 203, 220, 

 267, 411 

 cold treatment and, 221, 222, 224 

 in Drosophila spp., 222, 223 

 Heterochromosomes, 487 

 Heterogametic sex, 154, 233, 483, 



486, 487, 506, 513 

 Heteromorphic chromosomes, 134, 



203, 205, 506 

 Heteropycnosis, 486, 487, 488, 489 

 Heterosis, 384 ff., 537 



m maize, 368, 384, 387 

 Heterotypic division, 66 

 Heterozygosity and hj^brid vigor, 



385 

 Heterozygote, 19, 20, 82. 83, 85, 87, 

 88, 139, 140-142, 517 

 true-breeding, 428, 537 

 Hexaploid, 433, 463, 464, 466, 467, 



471 

 Hexavalent configuration, 4^3 

 Histogram, 344, 526, 527 

 Homeotypic division, 66 

 Homologue, 11, 17, 81, 125, 126 



pairing of, 52, 53, 76, 148 

 Homozygote, 19, 20, 82, 83, 85, 86, 



88, 139 

 Homozygous lines, establishment of, 



371, 372, 384, 387 

 Hordeum jubatum, 525 

 Hordeum vulgare, 435 

 Hormones, 22, 307, 308, 309, 310, 311, 



494, 495 

 Horses, 382 



Human beings, A-B blood groups 



in, 284, 286, 287, 288, 289, 290 



bleeding from the nose in, 44, 198, 



199 

 characters in, 37-46, 198 

 color bHndness in, 99, 100, 198, 199 

 Daltonism, 99, 100, 198 

 deafness, 43, 198 

 Dihybrids in, 130, 131 

 diseases in, 44, 45 

 distribution of genes in, 89, 90 



Human beings {continued) 

 dwarfism, 40 



ear, abnormalities of, 43, 104 

 epidermolysis bullosa, 198, 199 

 eye, abnormalities of, 42, 43. 101 

 eye color, 42, 43 

 fingerprint pattern, 101, 102 

 fingers and toes, abnormalities of, 



40, 41, 89, 90, 102, 104, 130, 



131, 346 

 hair, 39 



hemangioma, 130, 131 

 hemophilia, 100, 101 

 hemorrhagic diathesis, 198, 199 

 high degree of heterozygosity in, 



140 

 incomplete sex linkage in, 196, 



197, 198 

 insanity, 37, 38 

 linkage groups in. 195. 196 

 microphthalmus, 101 

 M-N blood types, 290, 291 

 muscular atrophy. 101 

 night blindness, 198, 199 

 number of chromosomes in, 6. 48. 



69, 140, 196 

 psychological characters. 45. 199 

 retinitis pigmentosa, 198, 199 

 Rh blood types. 289, 291, 292. 293, 



294, 295, 296, 297, 298 

 sex inheritance in, 69, 109. 481 

 sex-linked genes in, 99-101 

 skeleton, abnormalities of, 39. 40 

 skin, abnormalities of, 39, 44, 101, 



104, 198 

 skin color, 38, 39 

 smell, 44 

 spasms, 199 



spastic paraplegia, 198, 199 

 streblomicrodactyly, 41, 102 

 susceptibility to poliomj'elitis, 32, 



44 

 taste, 43 



teeth, abnormalities of, 43, 101 

 xeroderma pigmentosum, 198, 199 

 Y chromosome inheritance in, 104 

 Humulus japonicus, 505 

 Humulus Lupulus, 505 



