The authors consider the defect contribution to phase transition anomalies in various physical quantities in the situation when the system is quenched from the high-symmetry phase. The main emphasis is placed on the contribution of the metastable domain structure arising at the time of quenching. It is found that the formation of the domain structure may cause a sharp change in the frequency dependence of the sound absorption coefficient as well as the emergence of a narrow nonLorentzian central peak in the inelastic light scattering spectrum. The recent conclusion that the temperature dependence of the elastic light intensity during cooling from the high-symmetry phase through the phase transition temperature is monotonic is supported but also amended.