HEREDITY
427
![](http://upload.wikimedia.org/wikipedia/commons/thumb/2/25/PSM_V76_D431_Dark_rough_haired_guinea_pig.png/510px-PSM_V76_D431_Dark_rough_haired_guinea_pig.png)
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.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e5/PSM_V76_D431_White_smooth_haired_guinea_pig.png/510px-PSM_V76_D431_White_smooth_haired_guinea_pig.png)
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).