The concept of the Selfish Gene, introduced by Richard Dawkins in 1976, suggests that genes are the primary units of natural selection. According to this theory, organisms are vehicles for their genes, which strive to replicate and propagate themselves. This perspective emphasizes that behaviors often perceived as altruistic may actually serve the interests of the genes involved. In this framework, genes that promote survival and reproduction are more likely to be passed on to future generations. The Selfish Gene theory helps explain various biological phenomena, including kin selection and reciprocal altruism, by illustrating how genetic self-interest can influence behavior and evolution.