SCOPE OF GENETICS 9 



To give an intelligible account of the 

 next step in the analysis without having 

 recourse to precise and technical language 

 is not very easy. 



We have got to the point of view from 

 which we see the individual made up of a 

 large number of distinct ingredients, con- 

 tributed from two sources, and in respect of 

 any of them he may have received two similar 

 portions or two dissimilar portions. We shall 

 not go far wrong if we extend and elaborate 

 our illustration thus. Let us imagine the 

 contents of a gamete as a fluid made by 

 taking a drop from each of a definite number 

 of bottles in a chest, containing tinctures of 

 the several ingredients. There is one such 

 chest from which the male gamete is to be 

 made up, and a similar chest containing a 

 corresponding set of bottles out of which the 

 components of the female gamete are to be 



