TABLES. 



43 



Table 22. — Grade distribution of the Fi young produced by the croaa of "white' 



inth "dark" Dutch. 



Table 23. — Grade distribution of the Fi young 'produced by the cross of "white" uHth 



heterozygous "dark" Dutch. 



Table 24. — Grade distribution of the young produced by a cross of tan Dutch uith 



self aniinals heterozygous for tan. 



