SUMMARY 291 



tee that each cell of the plant or animal body has exactly 

 the same number and kind of chromosomes. 



N.B. It will be shown later that actually each cell has 

 its chromosomes in pairs, one member of each pair being 

 originally derived from each parent. It will also be shown 

 that the members of each pair are nearly, though not 

 necessarily exactly, alike. 



