EGGS NOT FERTILIZED 87 



first thought it might seem that parthenogenesis is just 

 one of the non-sexual methods of reproduction, like 

 budding or spore formation. A spore is a reproductive 

 cell that can develop without fertilization. Then why is 

 not parthenogenesis a form of spore reproduction? Two 

 or three facts, however, make us realize that 

 parthenogenesis is more related to sexual reproduction. 

 In the first place, the parthenogenetic cells are produced 

 in ovaries, where eggs arise; and in the second place, in 

 such forms as the bees, it seems that any egg may become 

 either a fertilized egg or a parthenogenetic one. It would 

 seem, therefore, that parthenogenesis is a case where the 

 process has gone backward; where a cell that might be 

 expected to unite has given up union and has come to 

 develop without it. 



