In another quiet weekend at the box office, the Mark Wahlberg film Flight Risk took the number one spot while mainstays Mufasa and Sonic keep chugging along.

People who have one of several well-documented medical conditions do not have only XX or XY chromosomes, which typically correspond with female and male sexes, respectively. Those conditions include ...

Barr, M. L., and Bertram, E. G., Nature, 163, 676 (1949).

After winning performer of the year (dancehall) at last year's Caribbean Music Awards, Jamaican reggae sensation Dexta Daps ...

“It is the policy of the United States to recognize two sexes, male and female.” “‘Female’ means a person belonging, at ...

While tortoiseshell coats are common in female cats, they're incredibly rare in males. Here's why this coat pattern is so ...

Klinefelter syndrome is a trisomy of the sex chromosomes. Most commonly (around 82 percent of the time) there is an extra X chromosome (an XXY arrangement). In 10 to 15 percent of men with Klinefelter ...

The Department of Health and Human Services, under the leadership of Robert F. | The Department of Health and Human Services, ...

The president’s executive order signaled an intention to narrowly define the sexes, but experts say he is oversimplifying the ...

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