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Gender verification in sports
Gender verification in sports (also known as sex verification, or loosely as gender determination or a sex test) is the issue of verifying the eligibility of an athlete to compete in a sporting event that is limited to a single sex. The issue has arisen a number of times in the Olympic games where it has been alleged that male athletes attempted to compete as women in order to win, or that an intersex person competed as a woman. The first mandatory sex test issued by the IAAF for woman athletes was in July 1950 in the month before the European Championships in Belgium. All athletes were tested in their own countries.〔http://www.foekjedillema.nl〕 Sex testing at the games began at the 1966 European Athletics Championships in response to suspicion that several of the best women athletes from the Soviet Union and Eastern Europe were actually men.〔R. Peel, ''"Eve’s Rib - Searching for the Biological Roots of Sex Differences"'', Crown Publishers, New York, 1994, ISBN 0-517-59298-3〕 At the Olympics, testing was introduced at the 1968 Olympic Winter Games in Grenoble. While it arose primarily from the Olympic Games, gender verification affects any sporting event. However, it most often becomes an issue in elite international competition.
While it would seem a simple case of checking for XX vs. XY chromosomes to determine whether an athlete is a woman or a man, it is not that simple. Fetuses start out as undifferentiated, and the Y chromosome turns on a variety of hormones that differentiate the baby as a male. Sometimes this does not occur, and people with two X chromosomes can develop hormonally as a male, and people with an X and a Y can develop hormonally as a female.
==Tests==
For a period of time these tests were mandatory for female athletes. A ''New York Times'' article suggests it was due to fears that male athletes would pose as female athletes and have an unfair advantage over their competitors.
One form of gender identification, which was mandated for all female olympic athletes by the International Olympic Committee in 1992, tested for the presence of the SRY gene, which is found on the Y-chromosome, to identify males potentially disguised as females. This method of testing was later abolished, as it was shown to be inconclusive in identifying maleness.〔(【引用サイトリンク】title=Olympic Gender Testing )〕 Nowadays, gender verification tests typically involve evaluation by gynecologists, endocrinologists, psychologists, and internal medicine specialists.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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