84 



CELL HEREDITY 



Haplophase 



Diplophase 



Fertilization 



o 



A\ I Yeast 



o' ^o Meiosis 



Haplophase 



o Meiosis 



Haplophase 



Meiosis m o' ^'T-s^ ir=rtil-,,t.„„ /-?' o Meiosis m 



. /Vo° Fertil zation ooy\ j<, 



Q tissue 0° , . °o crtissue 



+ \^ forms zygote / 



Haploid^^ ^YHap\6\6 

 gametophyte gametophyte 



Diplophase 

 Somatic cells and germ line 

 cells multiply by mitosis 



Diplophase' 

 Somatic cells and germ line 

 cells multiply by mitosis 



FIGURE 3.9. Generalized diagrams of the life cycles of haploid and diploid organ- 

 isms illustrating diflFerent systems of sexuality and mating. The symbol 9 stands for 

 female and represents the mirror of Venus; the symbol r? is for male and represents 

 the spear of Mars. 



