The following is an excerpt.
The governing body of world athletics is under pressure to review its eligibility rules after four elite female athletes were found to have the genetic make-up of males.
The competitors, who have not been named, were found to have XY chromosomes, which genetically define men, rather than the female XX. All four had internal male testes. It is believed to be the first time that the genetic disorder, which affects about one in 4,500 people, has been found in competing athletes, who, as a result, may have had more muscle and aggression than their female rivals.
Read the full story here: Four female Olympic stars were genetically male
