D 



u 



./ 





"/ \ 



M v \ 



o 



-v u- 





o 



1 J \ j ( ) { } 



MENDEL'S LAW 



" G 2 



Fig. 34 — Diagram illustrating Mendelian segregation of germ cells. 



D, dominant parent: R, recessive parent : F 1 , hybrid offspring, the recessive character 

 latent ; G A the germ-cells of F', supposed to be segregated in two camps, green and yellow, 

 with dominant and recessive characters. The arrows indicate possibilities of fertilisation 

 Two greens may combine, producing pure dominant offspring — to the left. Two yellows 

 may combine, producing pure recessive offspring — to the right. Green and yellow may 

 combine, as at the start, yielding impure dominants— green enclosing yellow. G ; this line 

 indicates the kind of germ cells produced by the second generation F*. 



I Facing p. 347 



