1594 



SUBJECT INDEX 



Sex determination {cont.) 

 Spinacia (cont.) 



decreasing daylight and, 42 



high temperature and, 42 

 X chromosome and, all-or-none action of, 17-20 

 Sex determining structures, requirements of, 6 

 Sex deviates, man (see also Homosexuality), 56- 

 63, 1384, 1405 

 chromosome patterns, 62 

 mosaics, 59 

 phenotypic 



genetic sex of, 55-56 



nuclear chromatin, 55-56 

 Sex differentiation (see also Sex genes) 



accessory sex structures, amphibian compared 



with birds, 135-136 

 amphibia 



gonadal hormones and, 135 



methods of study, 79, 80, 81, 89 

 autonomous character in female mammals, 137 

 basis of paradoxical effects of hormones, 141-143 

 birds 



gonadal hormones and, 135-137 



methods of study, 78-79 

 character of sex primordia and, 137 

 chromosome pattern and, 6-7 

 Drosophila 



autosomes and, 18-20 



c IIIG gene, 19 



Hr gene and, 49 



tra gene and, 50 



X chromosome and, 17-18 



Y chromosome and, 18 

 fetal compared with adult gonadal hormones, 



146-148 

 fish 



androgens and, 1065, 1067 



estrogens and, 1067 

 fowl, plumage, genes compared with hormones, 



47-48 

 gene action in, 5, 17-20 



gonadal hormones and, optimal dose, 147-148 

 hamster, androgen and, 136 



inductor substances, compared with sex hor- 

 mones, 80, 148-151 

 Lymantria, Z chromosome and, 17 

 mammals 



gonadal hormones and, 136 



methods of study, 82 

 man 



autosomes and, 56-62 



sex chromosomes and, 56-63 

 morphologic basis, 83, 110-111 

 rat, androgen and, 136 



pp-rj-f ilpg 



androgen and, 1067-1069 



estrogens and, 1067-1069 

 responsiveness of sex primordia to hormones 



and, 115, 123. 126. 137-140 

 Sciara 



mechanism, 31-32 



phenotypic, 31-32 



sex chromosome elimination and, 29-30 



sex-indifferent period, 32 

 Scyliorhinus 



DOC A and, 1067 



estradiol and, 1067 



progesterone and, 1067 



testosterone and, 1065 

 sex genotype and, 129 



specificity of hormone action and, 141-143 

 trout, estrogen and, 1067 

 Sex dimorphism (see also Sexual differences) 

 adrenal cortex, 482 



Sex dimorphism (cont.) 



aggressive behavior, in response to androgen, 



1254-1255, 1258 

 amphibia, 1042-1043 



cloacal glands, 121 

 birds 



genital tubercle response to ovarian hormone, 

 135 



syrinx, 131 



ovarian hormone and, 135 

 canary, nest-building, 1351 

 Drosophila 



sex combs, 11-12 



tergites, 11-12 

 duck, penis, 127 



ethionine and liver damage, 674 

 fish, 1042 



liver, 1053 

 fowl 



capacity for parental behavior, 1357 



incubation behavior, 1354 



response to prolactin, 1354 



spur growth, 1092 

 heterothallic mucors, 43 



hypophyseal gonadotrophic activity, 256-258 

 hypophysis, 1349 

 hypothalamus, 1349 



incubation by fowl, following prolactin, 1303 

 mammary gland, 592-593, 600 

 man, gender role, 1223, 1451-1455 

 mouse, nest-building, 1308, 1309 

 nuclear chromatin, 55 

 Oryzias, liver, 1046 

 Phalaroijodidae, 1284 



jjigeon, prolactin content of pituitary, 1290 

 l)rostatic response to androgen, 163 

 psychosexual orientation, bisexual brain cen- 

 ters and, 1413 

 pubic symphysis, 1008-1009 

 reptiles, 1043 



penis, 1042 



sexual segment, 1041 

 responsiveness to gonadal hormones, 1198 

 retrieving behavior, 1314 



ring dove, in development of incubation be- 

 havior, 1286 

 urogenital sinus response to estradiol, 124 

 Sex genes (see also Sex determination, Sex dif- 

 ferentiation) 

 autosomal in Drosophila melanogaster , 18-20 

 breadth of effects, 13 

 Drosophila 



and fertility, 13 



location, 13-20 



phenotypic effects, 16 



sex linked, 18 



tra and mating behavior, 16 



tra and sterility, 16 

 Drosophila busckii, 19 

 Drosophila melanogaster 



Hr effects, 15 



tra, 15-16 

 Drosophila virilis, Ix'*, 14-15 

 IV chromosome in Drosophila melanogaster, 



18-20 

 Hr, 12 



in autosomes in man, 58 

 phenotypic effects, 14-16 

 tra, 12 

 Sex genotype 



action in development of ovary, 85 

 and reactivity of tissues, 140 

 Sex identification of genetic sex, 77 



