Sex-biased gene expression in the body organs evolves rapidly, supporting a mosaic model of maleness and femaleness across tissues and thus challenging binary views of sex characteristics in mammals.

For decades, scientists believed DNA methylation fixed genes in permanent on or off states. This process enables cells to ...

Biological sex is usually described in simple binary terms: male or female. This works well for germ cells (sperm versus eggs ...

When cells are healthy, we don't expect them to suddenly change cell types. A skin cell on your hand won't naturally morph ...