In a cross between two heterozygous individuals (Aa), the results will be in the ratio of 1:2:1. This means that there will be a 25% chance of getting homozygous dominant (AA), a 25% chance of getting homozygous recessive (aa), and a 50% chance of getting heterozygous (Aa) offspring. So, the correct answer is "in the ratio 1:2:1 homozygous dominant to heterozygous to homozygous recessive."