Final answer:
The F2 ratio in this scenario will be 1:2:1, meaning that 25% of the F2 offspring will be AA, 50% will be Aa, and 25% will be aa.
Step-by-step explanation:
When true-breeding or homozygous parents (AA and aa) are crossed, all of the F1 offspring will be heterozygous (Aa) for the trait. In the F2 generation, if the F1 offspring are crossed, the resulting genotypic ratio will be 1:2:1. This means that the F2 generation will consist of 25% AA, 50% Aa, and 25% aa individuals.