Sexual reproduction is a better mode of reproduction because of the variation, evolution, adaptation and vitality. Variation The fusion of gametes from different parents occurs during sexual reproduction results in genetic recombination. It results in variations in sexual reproduction. Single parent gives rise to another offspring which is exactly similar to the parent as it passes its genetic material to the offspring resulting in no variations in progeny. Their environmental adaptability remains low. There are fusion gametes of two parents, male and female in sexual reproduction. Evolution As variation as a factor of natural selection plays an important role in evolution. It is adaptive to their environment as it results in meiosis cell division and crossing over. Adaptation The offspring produced due to sexual reproduction adapt better to the changing environmental conditions . Vigour and Vitality Genetic recombination , interaction , etc. during sexual reproduction provide vigour and vitality to the offspring.