II VPOTHESIS. 



41 



Or, disregarding order of the letters, and considering only the number 



and kind of genes in each kind of zygote, we have: 



in which the coefficients indicate the relative frequency of the different 



combinations. 



We may assume that : 



4 positive factors in a zygote correspond to a very fleshy person 



3 factors correspond to a fleshy person. 



2 factors correspond to a person of medium build. 



1 factor corresponds to a slender person. 



factor corresponds to a very slender person. 



Table 17 indicates the possible matings and their progeny. 



Table 17. — Percentage distribution of the progeny oj the various malinga, on the (uzunvption 

 that extreme fleshy build is dependent upon 4 zygotic factors in I is. 



