Question

If RR plants are crossed with rr plants, would the offspring have round or wrinkled peas? Why?

Answer 1

It depends. If the round peas are the dominant trait, it would be the answer. Vice versa. The dominant trait will be the answer.
Why? Because if you cross RR ( both dominant ) with rr (both recessive), 75% of the time it would turn out to be dominant. (Think of punnet squares)