COAT CHARACTERS IN GUINEA-PIGS AND RABBITS. 35 



In detail, the matings made are as follows : 



The relation existing between the characters combined in this cross 

 is one of simple Mendelian dominance, followed by segregation in the 

 next generation, as is clear from the following matings : 



The hybrid males, it is evident, form in approximately equal num- 

 bers albino gametes and those bearing the centripetal type of pigmen- 

 tation, and the latter transmit essentially the same kind of pigmentation 

 as was possessed by the pigmented parent and the pigmented grand- 

 parent. This conclusion is further supported by the result of matings 

 of hybrids inter se, as shown on the following page. 



