MENDEL AND HIS GARDEN PEAS 



23 



enough that those who listened were neither excited nor 

 enthusiastic. Indeed, they hardly seemed even interested, 

 and when the reading was over, Mendel's own excitement 

 was gone. His heart was heavy with disappointment. He 

 had expected so much, yet nothing came of it. After that 



GREEN ROUND 

 Q9 ^ 



YELLOW WRINKLED 



X 



v' 



YR 



Fi 



_^\_ 



YR 



YW GR YR YR GR GW 



>n 



IV 



GR YW YR r .YW 



. i : , . - .. . . 



YR 



Inheritance of Seed Characters in Peas 



F, yellow ; G, green ; W, wrinkled ; R, round. Notice that when green round peas are 

 fertilized by pollen from yellow wrinkled peas, the offspring (only one is shown) in 

 the first filial generation (F{j are all yellow and round. This means that yellow and 

 round are dominant, while green and wrinkled are recessive. Also notice that in the 

 second filial generation (F 2 ) the recessive green and wrinkled appear again in differ- 

 ent combinations with the dominant characters. (From "Mendel's Principles of 

 Heredity," by W. Bateson) 



his papers were simply printed and packed away to gather 

 dust in the Briinn library. And there they stayed, out of 

 sight and out of mind, unheard-of and undreamed-of, for 

 thirty-four years. Fortunately, however, during all these 

 years the library had them in safe keeping. 



