Hybrid Pea plant with yellow round seeds (YyRr) is self pollinated. Phenotypic ratio of next generation would be

The correct option is D 9 : 3 : 3 : 1.

When a dihybrid pea plant with yellow round seeds(YyRr), is self pollinated, in the next generation, 9 plants with yellow round seeds, 3 plants with yellow wrinkled seeds, 3 plants green, round seeds, 1 plant with green wrinkled seeds are formed. The Phenotypic ratio is 9:3:3:1.

So, the correct option is ‘9:3:3:1’.