Genetics, environment, and cultural factors all contribute to an individual's athletic potential. While genetics provide a basis, it is the synergy with the environment and local cultural enthusiasm that can lead to world-class athletic performance.
Regarding the statement that a genetic predisposition for athletic talent is essential if an individual is to compete at a world-class level, the evidence suggests that it is a combination of factors, including the environment, that influences athletic potential. Geographers argue that a passion for a sport within a particular region can create a virtuous circle, enhancing athletes' potentials.
The example of Jamaica's success in sprinting, due to both cultural enthusiasm and environmental factors, supports the idea that while genetics play a role in athletic predisposition, they are not necessarily decisive. Factors such as the number of participants, availability of local role models, and national passion can heavily influence the emergence of world-class athletes, suggesting that a blend of genetics and environment shapes athletic success.