The generation of magnetic fluctuations by MHD turbulence in the solar wind is discussed. An estimate of the effective magnetic Reynolds number in the solar wind based on a width of the inertial range of the turbulence is proposed. Dynamo activity is predicted to lead to generation of magnetic ropes whose length is of the order of the energy range scale, 2.5¿1011 cm, and whose thickness can be as low as 5¿108 cm. Experimental detection of the ropes would require determination of two-point and higher correlation functions for the magnetic fluctuations in the solar wind. ¿ American Geophysical Union 1992