INHERITANCE IN ASEXUAL REPRODUCTION 



193 



The fraternal is only slightly greater and its value is doubtful. 

 It will be considered again in the discussion of the cause of an- 

 cestral correlation within pure lines and clones. 



The second question, do the parents transmit to their buds 

 the characters which they have when the buds are formed, in- 

 volves one of two concepts. Either the effects of environ- 

 mental action must be transmitted or the organism must con- 

 tinually change in its hereditary potentialities during its develop- 

 ment in order that its transient characters shall be inherited. 

 Something of the latter conception seems to be implied in Pear- 

 son's doctrine of homotyposis. 



TABLE 18 



Correlation between the original number of tentacles of buds and the number borne 

 by the parents at the time when each bud was produced 



The correlation of the number of tentacles of the buds with 

 that of the number borne by the parents when each bud was 

 produced has been computed for Clones D and A ; these are given 

 in table 18. The high correlation of Clone A is obviously the 

 result of the inclusion of the two diverse strains but a compari- 

 son of the parental and grandparental correlations within this 

 clone shows that there is a slight positive parental correlation 

 which is not the result of the mixture of the two types. (The 

 parental correlation would not be higher than the grandparental 

 if the inclusion of diverse types were the only cause of correlation) . 

 This correlation is certainly very small, and that of Clone D 

 is also too small to have significance when considered alone, 

 but the fact that these correlations are greater than the ones 

 obtained for the initial number of tentacles indicates that there 

 is here some factor tending to produce a resemblance between 

 the mature parent and its buds. This is also the impression 



