What is the significance of the sexual process for increasing the hereditary variability of organisms?

During sexual reproduction, genetic information is exchanged between two organisms of different sexes. This is due to the sexual process. During the transfer of DNA, a combination of genes takes place. Dominant genes are allocated and a new unique organism is born. It is unique because it has its own DNA, which no one else repeats. But this organism has inherited traits from the parents, thanks to their genes. With asexual reproduction, the DNA of the parent organism and the offspring is completely identical.