Chapter X 

 CONCLUSION 



The body of information assembled thus far 

 establishes Habrobracon juglandis as a genetic 

 animal of unusual merit. In addition to its 

 possession of all the prerequisites for a ge- 

 netic form it has the advantages offered by par- 

 thenogenesis. Since the normal males are hap- 

 loid, their genotypes are phenotypically ex- 

 pressed; thus the need for the traditional back- 

 cross is eliminated. While it has been shown 

 that a considerable amount of information has 

 been accumulated along various lines, in no case 

 is the knowledge complete, and numerous avenues^ 

 of research are open for investigation. 



Habrobracon has ten. pairs of chromosomes. 

 Only four and perhaps fewer than four are as yet 

 known; so that at least six await exploration 

 and mapping. Many mutations have come to light, 

 but unpredictable numbers await the chance to^ 

 sho¥ their effects in haploid males. Numerous' 

 mutations have occurred whose effects are le- 

 thal to their owners; these when linked with 

 non-lethals may disturb expected ratios in such 

 a manner as to betray their presence. These may 

 be located on given chromosomes. 



Regarding the development of the mutants, 

 very little is known. They are known in their 

 final adult form, but exactly when and where 



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