Researchers are gaining a new appreciation for the genes on the X and Y chromosomes and how they shape sex differences in ...

New research shows the X chromosome influences disease risk, immunity and drug response beyond its role in sex.

In 2002, evolutionary biologist Jenny Graves shared a controversial calculation. The human Y chromosome, she wrote two years later in a commentary, "is running out of time." The male-determining sex ...

Add Yahoo as a preferred source to see more of our stories on Google. Researchers from the University of Oregon have solved a longstanding biological mystery: octopuses utilize a specific chromosome ...

The California two-spot octopus (Octopus bimaculoides) is native to the coast of California and Mexico and is identified by their bright blue eyespots. (Roger T. Hanlon/Marine Biological Labratory) ...

The octopus just revealed another one of its secrets: what determines its sex. University of Oregon researchers have identified a sex chromosome in the California two-spot octopus. This chromosome has ...

We often hear the expression that there are two kinds of people in this world. But that doesn’t always apply when it comes to categorizing people by their sex chromosomes. Other WRAL Top Stories "You ...

Here’s a quick reality check: ice cream sales go up in summer, and so do drownings. But no one thinks Ben & Jerry's is a silent killer. It’s correlation, not causation. Yet this same logical ...

It’s not just about chromosomes. Or reproductive cells. Or any other binary metric. Many genetic, environmental and developmental variations can produce what are thought of as masculine and feminine ...