INDEX 



Heape, 30. Rats, 91. 



Heredity, collateral, 6. inbreeding in, 147. 



definition of, 6. selection in, 123. 



Hyalodaphnia, 117. Reduction, in fern, 22. 



Reversion, 62. 



Jennings, 111. Riddle, 87. 



Johannsen, 45, 106. Riley, 158. 



Rodents, coloration of, 72. 

 Little, 59. Rotifers, sex determination in, 



164. 



Maize, ear-length in, 138. Russo, 159. 



Maturation of egg, 15, 20. 



of sperm-cells, 17. Schenck, 159. 



Mendel, 7, 34. Self-fertilization, 145. 



Mendelian ratios, 35, 45, 50, 59. Sheep, horns in, 102. 

 Mice, pale-colored, 81. Silk moths, 99. 



pink-eyed, 79. Snapdragon, golden variety of, 



spotted, 83. 61. 



yellow, 57. Spermatogenesis, 17. 



Morgan, 91, 165, 174. of wasp, 24. 



Mus alexandrinus, 91. Squash bug, sex determination 



Mus norvegicus, 94. in, 168. 



Mus rattus, 91, 94. 

 Mutilations, inheritance of, 29. Tornier, 102. 



Transplantation of egg, 30. 

 Nilsson-Ehle, 131. of ovary, 31. 



Treat, 158. 

 Parthenogenesis, artificial, 18. 



sex determination in, 162. Unit-characters, 38. 



Pigeons, reversion in, 62. 



Phenotype, 45. De Vries, 34, 89, 106. 



Phillips, 31. 



Prepotency, 101. Weismann, 29, 148. 



Punnett, 159. Wilson, 168. 



Woltereck, 117. 

 Rabbits, size inheritance in, 



129. Zygote, definition of, 25. 



184 



(i) 



