Dependence of quasi-particle alignment on proton and neutron numbers has been studied in A = 80 mass region through g-factor measurements by using TMF-IMPAD. The experimental results show that for the nuclides 84 Zr, 85 Zr and 86 Zr with Z = 40 the proton alignment is followed by the neutron alignment in 84 Zr and 85 Zr, while the neutron alignment is followed by the proton alignment in 86 Zr, and for the nuclides 82 Sr, 83 Y, 84 Zr and 85 Nb with N = 44 the proton aligns only in 82 Sr, the proton alignment occurs first that is followed by the neutron alignment in 83 Y and 84 Zr and the neutron alignment is followed by the proton alignment in 85 Nb. Proton and/or neutron alignments lead to different patterns of the g-factor variation with spin.