The network inhomogeneities and dynamics of polyelectrolyte copolymer gels formed by crosslinking poly(acrylamido-co-2-acrylamido2-methyl-1 -propanesulphonicacid) (poly(AAm-co-AMPS)) gels with N,N＇-methylene-bis-acrylamide (MBAAm) were studied using the light scattering (LS) technique. Combining static and dynamic light scattering data, static-structure network inhomogeneities and dynamic concentration fluctuations were separated and their proportions in the total light scattering intensity were estimated. The effects of the network crosslink density and the amount of charged comonomer in poly(AAm-co-AMPS) gel were investigated. Strong, but opposite effects of those parameters on the presence of static-structure inhomogeneities were revealed. The dynamics of poly(AAm-co-AMPS) gel was found to be greatly affected by variations in the AMPS content of the gels.