Let P: Aa(yellow) x Aa(blue). Acquired the F1 hybrid. Continue for SELF-pollinating F1. Determine the gene rate and the phenotype ratio of F2.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.