What is the advantage of sexual reproduction over asexual reproduction?

Sexual reproduction results in new combination of genes i. e., genetic variations which promotes diversity of characters whereas it is not possible in case of asexual reproduction.

Sexual reproduction plays an important role in the origin of new species having different characteristic which is not possible in case of asexual reproduction.

It introduces variability, which leads to continual evolution of various species to form better organisms. Evolution is not possible in case of asexual reproduction.