(NYT) – The decision is the most significant since Kirsty Coventry was elected last year to serve as president of the I.O.C.

Under the new policy eligibility will be determined by a one-time gene test, according to the I.O.C. The test, which is already being used in track and field, requires screening via saliva, a cheek swab or a blood sample.

When Ms. Coventry, a former Olympic champion swimmer from Zimbabwe, campaigned to lead the organization, she frequently said how important it was to protect the women’s category amid broader — and often bitter — debates about the participation of transgender athletes in sporting competitions. (Read More)