GLYPH<s48>GLYPH<s46>GLYPH<s48> GLYPH<s48>GLYPH<s46>GLYPH<s53> GLYPH<s49>GLYPH<s46>GLYPH<s48> GLYPH<s49>GLYPH<s46>GLYPH<s53> GLYPH<s50>GLYPH<s46>GLYPH<s48> GLYPH<s50>GLYPH<s46>GLYPH<s53> GLYPH<s48>GLYPH<s46>GLYPH<s48> GLYPH<s48>GLYPH<s46>GLYPH<s50> GLYPH<s48>GLYPH<s46>GLYPH<s52> GLYPH<s48>GLYPH<s46>GLYPH<s54> GLYPH<s48>GLYPH<s46>GLYPH<s56> GLYPH<s49>GLYPH<s46>GLYPH<s48> GLYPH<s102> GLYPH<s117> GLYPH<s103> GLYPH<s97> GLYPH<s99> GLYPH<s105> GLYPH<s116> GLYPH<s121> GLYPH<s116>GLYPH<s32>GLYPH<s40>GLYPH<s102>GLYPH<s109> GLYPH<s47>GLYPH<s99> GLYPH<s41> GLYPH<s98>GLYPH<s61>GLYPH<s56>GLYPH<s46>GLYPH<s54>GLYPH<s32>GLYPH<s102> GLYPH<s109> GLYPH<s97>GLYPH<s116> GLYPH<s32>GLYPH<s116> GLYPH<s104>GLYPH<s101>GLYPH<s32>GLYPH<s99>GLYPH<s111>GLYPH<s108>GLYPH<s108>GLYPH<s105>GLYPH<s115>GLYPH<s105>GLYPH<s111>GLYPH<s110>GLYPH<s32>GLYPH<s99>GLYPH<s101>GLYPH<s110>GLYPH<s116> GLYPH<s101>GLYPH<s114> GLYPH<s32> GLYPH<s100> GLYPH<s71> GLYPH<s61>GLYPH<s49>GLYPH<s54> GLYPH<s32> GLYPH<s100> GLYPH<s71> GLYPH<s61>GLYPH<s52>GLYPH<s48> FIG. 10: (Color online) Time evolution of fugacity. Employing the on shell parton cascade BAMPS we have studied the effect of an increasing number of parton degrees of freedom on the elliptic flow parameter v$_{2}$ generated in Au+Au collisions at the RHIC energy √ s$_{NN}$ = 200 GeV. The initial condition for BAMPS is assumed to be an ensemble of gluon minijets. The additional effective quark degrees of freedom during the further evolution are created by increasing the degeneracy factor d$_{G}$ from 16 for a pure gluon system to 40 for a quark gluon system. This prescription indicates the assumption that quarks and gluons are identical particles. With this assumption for the BAMPS calculations we have found that the p$_{T}$ averaged v$_{2}$ values and the total transverse energy at midrapidity are almost unchanged with or without quarks, which is a consequence of the almost same transport collision rates during the entire expansion. Second, incorporating quarks the parton multiplicities at freeze-out increase, which leads to a decrease of the mean parton transverse momenta 〈 p$_{T}$ 〉 and a softening of the transverse spectra. Simultaneously, the differential elliptic flow v$_{2}$ ( p$_{T}$ ) shifts toward lower momentum. Adding quarks with two flavors brings a 20% effect on 〈 p$_{T}$ 〉 and v$_{2}$ ( p$_{T}$ ), which is smaller than the maximum value of 26% due to the incomplete chemical equilibration in the present studies. The incomplete chemical equilibration is also the reason for the slightly smaller η/s value in the quark gluon 16 IV. SUMMARY