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

Variations occurring during sexual reproduction may be due to: Separation of homologous chromosomes (by chance only) during gamete formation. Crossing over (recombination) of homologous chromosomes. Fertilisation of gametes to form zygote. Errors during DNA copying or mutations. In asexually reproducing organisms only errors during DNA copying or mutations cause variations. Since the extent of variations is much larger in sexually reproducing organisms, therefore, the chances of evolution is also much in sexually reproducing These variations enable the organisms to adapt themselves to the changing conditions and also help to face the struggle for Over the time, they and rise to new species.