Duplicate genes for capsule-form in Bursa hursa-pasloris. 



113 



Fig. 5. 

 Resume of ratios 

 found in 142 families 

 in the first five gen- 

 erations following 

 the cross between 

 Bursa bursa-pastorift 



and B. Heegeri. 

 For details see text. 



' I ' .! I'll ! IS 



