The sot-gel transition of a radical chain crosslinking copolymerization system [N-vinylcaprolactam/2-hydroxylethyl methacrylate/allyl methacrylate] has been studied using in situ time-resolved dynamic light scattering (DLS) and in situ rheology. A critical dynamic behavior was observed near the sol-gel transition, which was characterized by the presence of a power-law spectra over three decades in the time-intensity correlation function g(2)(t) - 1 similar to t(-mu) and over two decades in the oscillatory shear experiment G'(omega) similar to G"(omega) similar to omega(n) A comparison of the obtained critical exponents mu approximate to 0.62 and n approximate to 0.75 was made. The theory predicts a relationship between these exponents, but up to now no experimental comparison has been done. The experimental results favor the percolation model, with a fractal dimension d(f) of the gel clusters of 1.67.