l62 



MENDELISM 



usually classed as abnormal. In some of these the 

 inheritance is clearly Mendelian. One of the cases 

 which has been most fully worked out is that of a 



Fig. 32. 



Normal and brachydactylous hands placed together for comparison. 

 (From Drinkwater.) 



deformity known as brachydactyly. In brachy- 

 dactylous people the whole of the body is much 

 stunted, and the fingers and toes appear to have two 

 joints only instead of three (cf. Figs. 32 and 33). 

 The inheritance of this peculiarity has been carefully 



