  We study the structure of Yukawa matrices derived from the supersymmetric
Yang-Mills theory on magnetized orbifolds, which can realize the observed quark
and charged lepton mass ratios as well as the CKM mixing angles, even with a
small number of tunable parameters and without any critical fine-tuning. As a
reason behind this, we find that the obtained Yukawa matrices possess a
Froggatt-Nielsen like structure with Gaussian hierarchies, which provides a
suitable texture for them favored by the experimental data.
