432 Aneuploids and Nondisjunction 



9. Could attached-X flies produce trisomies? Explain. Could other 

 translocations produce nondisjunctions and aneuploids? Explain. 



10. If a white-eyed female produced as the result of primary nondis- 

 junction were crossed with a wild-type male, what offspring would be 

 possible ? Explain. 



11. Show by diagrams how nondisjunction of the fourth chromosome 

 of Drosophila melanogaster might occur, and how triplo-IV and haplo-IV 

 types might result. 



12. What are nullosomic types? How could they be produced? 

 Would you expect to find nullosomic plants or animals? Explain. 



