INHERITANCE OF FECUNDITY 231 



All 9 Progeny 



Winter Production: Over 30 Under 30 Zero 



Observed 1 7 



Expected 8 



Mean winter production 42 eggs 9.00 eggs 



There are no data from which to make sure whether the one 

 bird with an ^Over 30' record represented fluctuation from the 

 'Under 30' class. It probably did, but this cannot be positively 

 asserted. 



Summary of all Fi matings 



Putting together the results of the matings of all Cornish Indian 

 Game males with Barred Rock females, we have for the* actual 

 observations : 



9 Progeny — Raw Data 



Winter Production: Over 30 Under 30 Zero 



Observed 12 58 6 



Expected 66.25 9.75 



Mean winter production 45.67 eggs 12.46 eggs eggs 



In view of the fact that the 11 of the 12 birds with 'Over 30' 

 records represent somatic fluctuations from the 'Under 30' class 

 it is desirable to present another summary table in which the 

 progeny are distributed in accordance with their gametic consti- 

 tution. 



9 Progeny on Gametic Basis 



Winter Production: Over 30 (L1L2) Under 30 {Lih) Zero (hl-i) 



Observed 1 69 6 



Expected 66.25 9.75 



The contrast between these distributions and those of the reci- 

 procal cross discussed before is very striking. Taken together 

 these reciprocal crosses support strongly the general hypothesis of 

 fecundity inheritance here being tested. 



