Scientists decided to study Thomas because he had an impressive jumping ability in basketball games that weren't developed with training.
These ideas show that the author believes that genetics has a great responsibility in the good performance of athletes.
Although Thomas was drafted into a basketball team, his ability to jump was noticed before that. This ability was the result of a highly developed Achilles tension, which made Thomas' feet easier to jump.
This was something that Thomas received genetically, which reinforces that athletes' good performance can be, in part, caused by genetics, in addition to training.
His question is about the article "The Sports Gene"
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