304 



INDEX 



Peach eye, 261 

 Pelargonium, 221 

 Petrunke'watcli, 198 

 Phaseolus \nilgaris, 204 

 Phillips, 207 

 Phrynotettix, 104-110 

 Phylloxera caryoecaulis, 183 

 Phylloxerans, 197 

 Pinney, 55, 232 

 Pisum humile, 256 

 sativum, 19, 134 

 Plough, 96-99, 115, 139-142 

 Plymouth rock, barred, 176, 180 

 Polar body, 40 

 Polytoma, 186 

 Prematuration stage, 142 

 Primary split, 101, 102, 107, 108 

 Primrose, 85 

 Primula floribunda, 150, 151 



kewensis, 151 



sinensis, 85, 87, 135, 146, 150 



verticillata, 150, 151 

 Pristiurus melanostomus, 49 

 Protenor, 55, 56 

 Protozoa, 207 



Punnett, 70, 85, 115-117, 250 

 Pure culture, 250 

 lines, 204, 211 

 Purple eye, 96, 124, 139-144, 240 

 Pygsera, 161, 163 



Rabbits, albino, 271 

 Rat, black, 271 



Norway, 271 



roof, 271 



yellow, 271, 272 

 Recessive, 23, 25 

 Reduction division, 43, 75, 101 

 Reduplication, 115-117 

 Regeneration, 154 

 Reversal of dominance, 33 

 Riddle, 194, 196, 245 

 Ring dove, 194 



Robertson, 74, 102, 103, 111-112 

 Rose comb, 68, 69 

 Rosenberg, 160, 161, 256 

 Rotifer, 185, 197, 198 

 Roux, 142 

 Rudimentary wing, 248 



Sable body color, 158, 159 

 Saunders, 85, 254 

 Satsuma, 256 

 Schreiners, 44 

 Scute, 122 

 Sebrights, 243, 244 

 Secondary split, 101, 102 

 Sea urchin, 188, 189 

 Segregation, 16, 23, 39 

 Seller, 174, 179 

 Selachian egg, 50 

 Selachians, 114 

 Senecio vulgaris, 85 

 Sex, 196-203 



chromosomes, 42, 57 



determination, 180 



genes, 193 



linked characters, 84 



ratios, 197-200 

 Shinji, 210 

 Shull, 71 



Silkworm, 135, 137, 146, 186, 228 

 Simocephalus, 194 

 Smerinthus, 164 

 Single comb, 68, 69 

 Snapdragon, 85, 135, 255 

 Sooty fly, 27 

 Species, 270 

 Speck, 123, 144 

 Spencer, Herbert, 234 

 Spermatogonia, 154 

 Spermatogenesis, 104-110 

 Spermatozoon, 43 

 Sphaerechinus, 216, 217 

 Spores, 151 

 Sports, 248 

 Squirrels, albino, 271 

 Star eye, 122, 123 

 Stark, 256 

 Stenotomus, 232 

 Stevens, 145, 165 

 Stocks, 85, 254 

 Stomps, 149, 155 

 Streptopelia abla, 194 

 Strong, 196 

 Strongylocentrotus, 216, 217 



Franciscanus, 231, 232 



purpureua, 231, 232 



