Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers, and the other has white, terminal flowers; all F1 individuals have red, axial flowers. Among the F2 offspring, what is the probability of producing plants with white axial flowers?

Question

Quizplus · Accepted Answer

The traits follow Mendelian genetics, with red color (R) being dominant over white (r) and axial flowers (A) being dominant over terminal (a). The cross is RrAa x RrAa for the F1 generation. White axial flowers would be rrA_, which occurs with a probability of 1/4 (for rr) * 3/4 (for A_) = 3/16.

Two True-Breeding Stocks of Pea Plants Are Crossed