There are many researches and articles on the relationship between man and nature in the novel and how nature has power over man , like the fire and storm on Bathsheba's property, or the loss of Gabriel. his sheep by the dog, which is part of nature. But the argument of this article is different. It analyzes the new basis of Darwin's theory of natural selection, both cultural and biological. Biologically, Darwin argued that bad genes die and good genes survive. Socially, Darwin argues that survival is one that defies others and assimilates oneself to time and the environment. To prove the use of Darwin's biological theory, this article references Gabriel Oak's two dogs, as well as Bathsheba and Fanny's different genes. In cultural selection, Bathsheba is the one who demonstrates rapid changes and adaptations with the environment. Then there is the sexual selection demonstrated by Bathsheba when she tries to choose the best suitor. There is a power of wealth, weapon, intellect and performance that differentiates Bathsheba's three suitors and makes them each win at the