In your lab, you used a random fly generator to simulate inheritance of wing size in Drosophila, which follows Mendelian genetics. Assume that full-size wings (W) are dominant over short wings (w). If the initial cross was between a homozygous full-size wing fly (WW) and a homozygous short wing fly (ww), what is the expected ratio of flies with full-size wings to those with short wings in the F2 generation?