Question : A cross was made between pure breeding pea plantone with round and green seeds and the other with wrinkled and yellow seeds. (i) Write the phenotype of F_(1) progeny. Give reason for your answer. (ii) Write the different types of F_(2) progeny obtained along with their ratio when F_(1) progeny was selfed.

Question : A cross was made between pure breeding pea plantone with ro

1.	Question : A cross was made between pure breeding pea plantone with round and green seeds and the other with wrinkled and yellow seeds. (i) Write the phenotype of F_(1) progeny. Give reason for your answer. (ii) Write the different types of F_(2) progeny obtained along with their ratio when F_(1) progeny was selfed.
Answer» Solution :(i) The cross was made between round, green seeds and wrinkled, yellow seeds. In the given cross, two traits were TAKEN into account, which is a dihybrid cross. Yellow colour and round shape is dominant over green colour and wrinkled shape. The above cross shows round and yellow seeds in the `F_(1)` generation. It occurs because dominant traits (round and yellow) express itself, whereas recessive traits (wrinkled and green) get suppresed. (ii) On SELFING of `F_(1)` generation : PHENOTYPIC ratio `-9:3:3:1` Round yellow - 9`""`Round green - 3 Wrinkled yellow - 3 `""` Wrinkled green - 1