HEREDITY 



427 



Fig. 11. A dark rough Guinea-pig, the new combination of characters obtained when 

 animals are mated like those shown in Figs. 9 and 10, respectively. 



a common basis. Blending inheritance may possibly be only a complex 

 sort of Mendelian inheritance, in which many independent factors are 

 simultaneously concerned. The question is one of much theoretical 

 interest. 



Its solution awaits further investigation. 



Fig. 12. A 'white smooth Guinea-pig, a second new combination of characters, 

 but obtained first among the grandchildren of such animals as are shown in Figs. 9 

 and 10. Other grandchildren are like the respective grandparents (Figs. 9 and 10) 

 or the parents (Fig. 11). 



