SUBJECT INDEX 



1235 



Chromatin, 1096 



Chromatolysis of ganglian cells, 995 

 Chromonema effects, 801, 802, 814 

 Chromophil substance, 1095 

 Chromophoric groups, 74, 84, 289 

 Chromosome aberrations, 289, 324-326, 

 334, 338, 341-342, 627, 628, 717, 798, 

 825, 1135 

 in animal cells, induced, 627, 629, 630, 

 632-635, 642, 645, 648, 650, 652, 

 653, 655, 656, 659, 666, 669, 671, 

 673, 674, 676, 682-690 

 in mammals, 826, 831, 832, 835-837, 

 839, 842, 843, 854, 855 

 and radiation damage to embryo, 

 902-904, 913 

 in microspores, 715 

 oxygen tension, 940 

 radiation-induced, effect on, of centrif- 

 ugation, 737 

 of colchicine, 737 

 of sonic vibration, 737 

 in Tradescantia, 713-761 

 regenerating liver, 1128 

 tumors, 338 

 Vicia faba, 306 

 Chromosome breaks, 124, 132, 135, 136, 

 138, 140, 272, 364, 446, 598, 717, 

 801, 802, 836, 839, 846, 847 

 in animal cells, induced, 628-630, 632- 

 635, 637, 641, 642, 647, 649-671, 

 673-682, 687, 688, 690 

 distribution in chromosomes, 720 

 and dosage, 482, 724 

 frequency per cell, 125 

 healing of, 366, 491 

 and infrared, 571 

 intragenic, 497 

 and ionization, 480-492 

 isochromatid, 490 

 multiple, 366-377 

 point mutation, 496-507 

 restitution of, 363, 483, 499, 500, 722 

 reunion of, 722, 730, 749 

 single, 362-366 

 Chromosome changes, in form, 801, 814 



nonrandom incidence of, 377-380 

 • and ultraviolet radiation, 531-535 

 Chromosome exchanges, 717 



relation of, to fast-neutron dose, 726 

 to radiation intensity, 727 

 to X-ray dose, 725 

 Chromosome matrix, 555 

 Chromosome matrix effects, 814 

 Chromosome number, in Drosophila 

 melanogaster, 631, 642 

 in Tradescantia, 631 



Chromosome rearrangements, 132 

 in animal cells (see Chromosomes) 

 gross, and ionization, 380, 480-488 

 minute, 380 

 Chromosome ring, 372, 497, 498, 500, 514 

 Chromosome stickiness, 777, 779, 798- 

 801, 814, 1097 

 dose and, 800 

 thymonucleic acid depolymerization 



and, 800, 801 

 time after treatment and, 798-800 

 Chromosomes, 352, 355, 1096 

 acentric, 363, 364 

 adhesive ends, 446 

 aneuploidy of whole, 358-359 

 in animal cells, adhesion, induced, 694, 

 695 

 chromatids, 628, 632, 642, 647-650, 



659-661, 664, 675 

 deficiencies, 640-642, 645-650, 661- 



663, 667-670 

 division, 628, 677-680 

 duplications, 636, 637, 640-642, 645, 



648-650, 660, 662, 689 

 fragmentation, induced, 628, 629, 



631, 632, 659, 665, 668 

 inversions, 635-638, 647, 650, 651, 



654, 661-663, 670, 677-680, 685, 



687, 689 



isochromatid breaks, 632, 660 

 neuroblast, 635, 638, 648, 651, 659, 



660, 666, 667, 679 

 rearrangement, 627, 629, 630, 632, 



635-637, 641, 642, 649-657, 660, 



661, 663-666, 668-681, 684, 685, 



688, 689 



recombination, 630, 642, 649, 652- 



655, 660, 661, 663, 665, 670, 671, 

 674-680, 682, 687, 690 



reconstitution, induced, 628, 629 

 salivarv-gland, 447, 494-496, 507, 

 635-637, 646, 648-652, 660, 661, 

 663-665, 668-670, 673, 677-679, 

 689 

 translocation, induced, 635, 637-642, 

 651, 652, 659, 661-663, 669-671, 

 673, 674, 679, 680, 685, 687, 689 

 transpositions, 650, 651, 689 

 arrangement in sperm, 520 

 balancing, 457 

 breakage-fusion-bridge cycle, 365, 451, 



456, 515, 560 

 bridge formation, 482 

 centric, 363, 364 

 and deficiency, 449 

 deletion in, 371, 372 

 dicentric, 364 

 distribution, 630 



