Final answer:
P, F1, and F2 are terms used in genetics to represent different generations of offspring in a breeding experiment.
Step-by-step explanation:
P, F1, and F2 are commonly used terms in genetics to represent different generations of offspring in a breeding experiment. In genetics, P stands for the parental generation or the first generation of individuals being crossed. F1 stands for the first filial generation, which is the offspring resulting from the cross of the P generation. F2 stands for the second filial generation, which is the offspring resulting from the cross of the F1 generation.