Two purebreeding mutant plants were crossed One had large le

Two pure-breeding mutant plants were crossed: One had large leaves (wild-type leaves are small) and the other made purple flowers (wild-type flowers are pink). All F1 individuals had small leaves and purple flowers. Assuming independent assortment, what proportion of the F2 individuals are expected to be phenotypically wild-type

Solution

Large leaves (S); small leaves (s); Purple flower (P); and pink flower (p)

Parent generation : small leaves (ssPP) X pink flowers (sspp)

F1 generation: small leaves and purple flowers (ssPp)

F2 generation:

The F2 offspring produced are in 3:1 ratio containing 3 small leaves and purple phenotype and 1 small leaves and pink phenotype. Therefore, 25% of F2 individuals are phenotypically wild type.