  We consider the Yukawa couplings for quarks and leptons in the context of
Pati-Salam model using intersecting D-brane models where the Yukawa coupling
matrices are rank one in a simple choice of family replication. The CKM mixings
can be explained by perturbing the rank 1 matrix using higher order terms
involving new Higgs fields available in the model. We show that the near
bi-large neutrino mixing angles can be naturally explained, choosing the light
neutrino mass matrix to be type II seesaw dominant. The predicted value of
U_{e3} is in the range \simeq 0.05-0.15. In the quark sector, V_{cb} is
naturally close to the strange/bottom quark mass ratio and we obtain an
approximate relation V_{ub} V_{cb} \simeq (m_s/m_b)^2 V_{us}. The geometrical
interpretations of the neutrino mixings are also discussed.
