Understanding Trihybrid Cross
Trihybrid Cross Parent: AaBbDd x AaBbDd To get gametes: - - Write 4 A, 4 a in 2 rows - - Fill in B B b b in each row - - Fill in D d D d in each row A B D A B d A b D A b d a B D a B d a b D a b d To get F2 generations: - - Do Punnett square - - Then find Dominant in all - - Dominant in all except recessive a - - Dominant in all except recessive b - - Identify all of the unique phenotypes - - The ratio should be 27: 9: 9: 9: 3: 3: 3: 1