The proteins can actually differ. In fact, this gene can code for a toll plant, but this gene can code for a short plant. And in that particular case, because the toll trade is dominant over the short trade, this will actually express the trade. But this will not be expressed because by the law of dominance we have a dominant trait will basically inhibit the expression of that recessive trait. So also notice that because homologous chromosomes have similar size, shape and structure, each allel pair are found at similar locations along the chromosome that is at a similar locus. So if g number one for height is found on the top at this locus, then on the homologous chromosome, the locus will also be found in that location on the top of that chromosome.