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In Type-I seesaw model, the lepton flavor mixing matrix (PMNS matrix) and thequark flavor mixing matrix (CKM matrix) may be connected implicitly through arelation between the neutrino Dirac Yukawa coupling $Y_D$ and the quark Yukawacouplings. In this paper, we study whether $Y_D$ can satisfy, in the flavorbasis where the charged lepton Yukawa and right-handed neutrino Majorana massmatrices are diagonal, the relation $Y_D \propto {\rmdiag}(y_d,y_s,y_b)V_{CKM}^T$ or $Y_D \propto {\rm diag}(y_u,y_c,y_t)V_{CKM}^*$without contradicting the current experimental data on quarks and neutrinooscillations. We search for sets of values of the neutrino Dirac CP phase$\delta_{CP}$, Majorana phases $\alpha_2,\alpha_3$, and the lightest activeneutrino mass that satisfy either of the above relations, with the normal orinverted hierarchy of neutrino mass. In performing the search, we considerrenormalization group evolutions of the quark masses and CKM matrix and thepropagation of their experimental errors along the evolutions. We find thatonly the former relation $Y_D \propto {\rm diag}(y_d,y_s,y_b)V_{CKM}^T$ withthe normal neutrino mass hierarchy holds, based on which we make a predictionfor $\delta_{CP},\,\alpha_2,\,\alpha_3$ and the lightest active neutrino mass.

Prediction on Neutrino Dirac and Majorana Phases and Absolute Mass Scale from the CKM Matrix