Appendix 5 

 Genotypes expected in backcrosses and in Fjs: 



Monohybrids: 



Backcross lAarlaa 



Fi 1 AA :2Aa :laa 



Dihybrids: 



Backcross lAaBb :laaBb :lAabb :laabb 



F, 1 AABB :2AaBB : laaBB : 



2AABb :4AaBb :2aaBb : 

 lAAbb:2Aabb:laabb: 



With full dominance the F2 phenotypes are 

 9AB:3Ab:3aB:lab 



Trihybrids: 



Backcross lAaBbCc :lAaBbcc :lAabbCc : 

 lAabbcc :laaBbCc rlaaBbcc : 

 laabbCc:laabbcc 



F, lAABBCC:2AaBBCC:laaBBCC: 



2AABBCC :4AaBBCc :2aaBBCc : 

 lAABBcc :2AaBBcc :laaBBcc : 

 2AABbCC :4AaBbCC :2aaBbCC : 

 4AABbCc :8AaBbCc :4aaBbCc : 

 2AABbcc :4AaBbcc :2aaBbcc : 

 lAAbbCC :2AabbCC :laabbCC : 

 2AAbbCc :4AabbCc :2aabbCc : 

 lAAbbcc :2Aabbcc :laabbcc : 



With full dominance the F2 phenotypes are: 



27ABC :9ABc :9AbC :9aBC :3Abc :3abC :3aBc :labc 



