APPENDIX B 201 



APPENDIX B 



" Organised beings present, as you are aware, two main kinds of 

 reproduction, the sexual and the asexual. These two kinds of 

 reproduction present certain differences, of which the most im- 

 portant, and the only one which concerns us now, is the fact that 

 genetic variation is essentially associated with sexual reproduction, 

 and is rarely, if ever, found in asexual reproduction. In other 

 words, whereas the offspring resulting from asexual reproduction 

 as a rule exactly resemble the parent, they are always different 

 from the parent in sexual reproduction. . . Speaking broadly, 

 genetic variation is connected with sexual reproduction" (Pro- 

 fessor Adam Sedgwick's Presidential Address, Section D., British 

 Association, 1899). 



