INDEX 



Heape, 30. 



Heredity, collateral, 6. 



definition of, 6. 

 Hyalodaphnia, 117. 



Jennings, 111. 

 Johannsen, 45, 106. 



Little, 59. 



Maize, ear-length in, 138. 

 Maturation of egg, 15, 20. 



of sperm-cells, 17. 

 Mendel, 7, 34. 



Mendelian ratios, 35, 45, 50, 59. 

 Mice, pale-colored, 81. 



pink-eyed, 79. 



spotted, 83. 



yellow, 57. 



Morgan, 91, 165, 174. 

 Mus alexandrinus, 91. 

 Mus norvegicus, 94. 

 Mus rattus, 91, 94. 

 Mutilations, inheritance of, 29. 



Nilsson-Ehle, 131. 



Parthenogenesis, artificial, 18. 



sex determination in, 162. 

 Pigeons, reversion in, 62. 

 Phenotype, 45. 

 Phillips, 31. 

 Prepotency, 101. 

 Punnett, 159. 



Rats, 91. 



inbreeding in, 147. 



selection in, 123. 

 Reduction, in fern, 22. 

 Reversion, 62. 

 Riddle, 87. 

 Riley, 158. 



Rodents, coloration of, 72. 

 Rotifers, sex determination in, 



164. 

 Russo, 159. 



Schenck, 159. 

 Self-fertilization, 145. 

 Sheep, horns in, 102. 

 Silk moths, 99. 

 Snapdragon, golden variety of, 



61. 

 Spermatogenesis, 17. 



of wasp, 24. 



Squash bug, sex determination 

 in, 168. 



Tornier, 102. 

 Transplantation of egg, 30. 



of ovary, 31. 

 Treat, 158. 



Unit-characters, 38. 

 De Vries, 34, 89, 106. 



Weismann, 29, 148. 

 Wilson, 168. 

 Woltereck, 117. 



Rabbits, size inheritance in, 

 129. 



Zygote, definition of, 25. 

 184 



(2) 



