84 



INHERITANCE IN GUINEA-PIGS. 



The following table gives a summary of the data bearing on the 

 inheritance of the albino series of allelomorphs based on these conclu- 

 sions. It will be noticed that animals of every possible formula have 

 been tested by crosses with albinos, the lowest recessives. No attempt 

 has been made to make all other possible crosses, and several (especially 



TABLE 36. Summary of albino series crosses (crosses 16 to 44)- 



ones involving red-eye) have not yet been made by the writer. The 

 last column refers to the crosses tabulated at the end of the paper. 

 The ratios expected are obvious from the nature of the matings, except 

 that 39 to 44 were not random crosses of their kind. The appearance 

 of recessive young was used as a criterion of the nature of the parents 

 in these cases. This causes an excess of recessives to be expected. 



