A farmer performed a cross between true breed of a round-seeded pea plant and wrinkled seeded plants. What is the outcome in F₁ generation? 

The outcome in the F₁ generation of a cross between a true breeding round-seeded pea plant and a true breeding wrinkled-seeded pea plant is progeny with all round seeds. This is because the round seed trait is dominant over the wrinkled seed trait, and the F₁ generation will all inherit one round seed allele from the round-seeded parent and one wrinkled seed allele from the wrinkled-seeded parent.