An Introduction to a Biology 



this generation 1,023 with constant dominant character, 

 1,023 with the recessive character, and only two hybrids " 

 (Bateson, '02, p. 59). 



(4) MENDEL'S THEORY TO ACCOUNT FOR HIS RESULTS 



Mendel knew that green-seeded peas bred true, when 

 self -fertilised or cross-fertilised by other green peas ; and 

 that the same was true of the yellow. That is to say, the 

 germ-cells of green peas will always produce green peas, 

 and those of yellow will continue to give yellow. 



But what happens when a green pea is crossed with 

 a yellow : that is, when a " green " germ-cell meets a 

 " yellow " germ-cell ? We know that a yellow-seeded 

 hybrid is produced ; but we want to know the condition of 

 its germ-cells. Mendel's hypothesis was that it contained 

 50% " yellow " germ-cells and 50% " green " ; no " greenish- 

 yellow " and no " yellowish-green " germ- cells, but equal 



