We describe the measurements of the cross-correlation function of photon pairs at 780 nm and 1367 nm showing quantum beats from Four-Wave Mixing (FWM) generated in Rubidium 87. The quantum beats come from the interference between two-photon decay paths through different intermediate hyperfine states in the process. We observe that it is possible to select different decay paths, and modify the biphoton spectra, by coupling different hyperfine levels of the atomic configuration in Rubidium with the pump fields and using selection rules.