Evolutionary change is not possible in asexual reproduction. In asexual reproduction, the exact replica of a parental organism is created. So there is no chance of evolutionary change. In asexual reproduction, an exact genetic copy of the parent organism is produced (a clone ).
Asexual reproduction is the mode of reproduction that is involved in the production of offsprings by a single parent. The genes and genetic material are just multiplied and passed on to new organisms from the parent. The number of offsprings produced may vary from two to many. Hence there is no evolutionary significance.