Chromosomes occupy specific regions of a nucleus, called "chromosome territories." These subdomains might be doing much more than just keeping everything organized.

This organization can be explained by weak interactions ... pattern formed by many stacked layers along the axis of the ...

The planned changes include reinstating a version of chromosome testing that was ... to athletes who were born female but had what the organization describes as naturally occurring testosterone ...

These tests will screen athletes for genes containing the Y chromosome. Similar tests have ... who would be willing to carry them out. The organization is hoping to have testing in place by ...

The planned changes include reinstating a version of chromosome testing that was ... to athletes who were born female but had what the organization describes as naturally occurring testosterone ...

World Athletics president Sebastian Coe said Tuesday that the track and field’s governing body has approved the introduction of cheek swabs and dry blood-spot tests for female athletes in order to ...