Sept. 15, 1915 Resemblance of Parents and Offspring of Sheep 



499 



TABLES FOR DAMS AND MATERNAL GRANDPARENTS WITH A "COM- 

 PLETE AMERICAN" PEDIGREE 



Tables XX to XXV correspond to Tables III to VIII, and the results 

 to be drawn from the tables based on data of the "complete American" 

 pedigrees do not differ essentially from those drawn from the total popu- 

 lation. Here again, as with the total population, there appears to be a 

 slight correlation between size of litter in which maternal granddams and 

 offspring are bom, but we are unable to make a similar assertion about 

 maternal grandsires and offspring. 



Table XX(A). 



-Correlation between offspring and maternal granddams with "complete 

 A merican ' ' pedigree 



Means of arrays of offspring : 



(i) WTien the dam and granddam are singles i. 3208 ±0. 0086. 



(2) WTien the dam is a single and the granddam a twin. i. 339 ±0. on. 



(3) WTien the dam is a twin and the granddam a single, i. 412 ±0. on. 



(4) When the dam is a twin and the granddam a twin . . i. 455 ±0. 013. 



(5) When either dam or granddam is a triplet i. 600 ±0. 046. 



Table XX(B). — Percentages of offspring in states j, 2, and j to correspond to the 

 states i-i, 1-2, 2-1, 2-2, . . . of the dam-s and m.aternal granddams 



« See footnote, Table I (B). 



