Genetics and bio-technology From fast-growing science, genes play an important role in physical education, where they are responsible for half the variables in physical performance among members of the community, as well as they are responsible for half of the variables in response to physical training. Genes may be more important than training in interpreting differences in performance among players. The process of selection and identification of talent is one of the essentials for creating an outstanding athlete. Genetics is the transmission of genetic traits across generations. Genetics in general and human inheritance in particular are of both theoretical and applied importance.<br />A lot of the training curriculum does not take into account the genetic changes in the players, there is a group of players are highly responsive to exercise and easy to get rid of lactic acid within hours, while the other group see that they respond to a few exercise and start the effects of fatigue on them clearly knowing that the exercise time is the same and here asks the researcher why this The change in levels despite the fact that all players are exposed to the same physical effort.<br />