Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?

Explanation

Sexual reproduction cause more viable variation due to the following reasons:
Error in copying of DNA, which are not highly significant .
Random segregation of paternal and maternal chromosomes at the time of gamete formation.
Exchange of genetic material between homologous chromosomes during formation of gamets.
Accumulation of variations occured due to sexual reproduction over generation after generation of selection by nature created wide diversity.
In case of sexual reproduction, only the very small changes due to inaccuracies in DNA copying pass on to the progency. Thus offsprings of a sexual reproduction are more or less genetically similar to their parents so it can be concluded that evolution in sexually reproducing organisms proceeds at a faster pace than in sexually reproducing organisms.