Whorf, B. L., 297, 314 



Wild type, 58 



Wilson, E. O.. 249 



WUson.G. B.,35 



Wolves, 87 



Woodson, R. E., 214, 215, 2-34, 249 



Woody plants, recombination in, 171, 183 



Worms, 201 



Wright, S., 45, 46, 103, 115, 116, 118-121, 



123, 195, 235 

 Wynne-Edwards, V. C, 88 



X chromosome, 47, 48, 178, 180 



Y chromosome, 47, 48, 175, 178, 180 

 Yarrow, 213 

 Yeast, 61,74, 169 

 Yellow hammers, 128 



Zea, 47 



Zinjanthropus, 284, 285 

 Zygotes, wastage of, 169, 182 

 Zygotic chromosome nmnber, 184 



347 



