3 2 



COAT CHARACTERS IN GUINEA-PIGS AND RABBITS. 



In detail, the matings which I have made under this category and 

 their results are as follows : 



Hybrids of all three sorts show segregation in forming gametes, though 

 as yet not exactly in the expected Mendelian proportions. Thus the 

 two reddish-black young of ? 2013 by c? 2054, viz ' 9 1179 and c? 1180, 

 have given the following results when mated with red animals : 



It will be observed that $ 1179 has given by two different red males 

 as close an approximation as is possible to the expected equality of 

 red young on one hand and of black or agouti young on the other 

 hand. But her brother, $ 1180, has produced a most astonishing 

 excess of red individuals, more than three times as many red young 

 being recorded as black ones. It would seem to be a peculiarity of 

 this animal to form red gametes either more numerous or more vigorous 

 than his black ones, for red young are in excess in all his matings 



