MEASURE OF RESEMBLANCE OF FIRST COUSINS 



13 



The means for the three groups are '287, - 265 and "250 respectively. It may 

 possibly be therefore that change of sex slightly weakens the intensity of inheritance 

 in the stock. If we turn to the first consideration the change of sex in the same 

 generation, the connected parents are of the same sex and the cousins of the same sex 

 in A and A. but in K the connected parents are of different sexes and the cousins 

 o\' different sexes. A" is not. however, the least of the three. In C and /''there is a 



Table III. General Results of First Scries. Characters of Cousins. 



M. S. C. = Mean Square Contingency. F. T. = Fourfold Table, 

 difference of sex in the connecting parents, but not in cousins ; in G and H, there is 

 no difference in the connecting parents but one in the cousins. We might therefore 

 expect no difference in the four values. But we find C and G contrasted in magnitude 

 with F and H. In cither words two males related by a male and female go with a male 

 and female related by two males ; and again two females related by a male and female go 

 with a male and female related by two females. We can throw no light on this point, 

 and it may only be a strange result of random sampling. In the third group there are 

 no sex differences in the types B and D for either parental or cousinal generations. 



