Index 



211 



Stocks, factor interactions in, 70; 

 non-Mendelian inheritance in, 

 126 



Strasburger, E., 190, 196 



Struggle for existence, its r6le in 

 evolution, 4 



Sturtevant, A. H., 107 



Superfemales, 200 



Supermales, 200 



Supplementary' factors, 61, 67, 68 



Survival of the fittest, 4 



Susceptibility to disease, inherit- 

 ance of, 20 



Sweet peas, reversion in, 59 



Tanaka, Y., 107 



Tetraploidy, 114, n6 



Toads, sex determination in, 188 



Transeau, E. N., 129 



Trihybrid ratio, 48 



Triple crossing over, 107 



Triploidy, 113, 115, 199 



Unit characters, 38, 89 



Use and disuse, inheritance of 

 effects of, 2, 19 



Walter. H. K., on inheritance of 

 ac(juired characters, 14, 17 



Weismann, August, 9, 13, 15, 17, 



i'"^, 19, -^5. 77 



W lieat: cumulative factors in, 72; 

 complexmutation in, 113; hy- 

 brid vigor in, 169 



Wide crosses, 169 



Wiedershcim, W., i8 



Williams, J. Lloyd, 7,1^ 



Winge, ()., 123 



Winkler H . i:'! 



A' chromosome, 184, 191, 192, 

 200 



Xenia, 145 



1' chromosome, 184, 191, 192 



Yampolsky, C, 196 



Yeast, inheritance of acquired 

 characters in, 1,2 



Zedebaur, E., 28 

 Zeleny, C, no, 1 1 1 

 Zig-zag inheritance, 184 



ntOPERTY UBUIT 



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