> the X chromosome has a mechanism to shut itself down (which makes sense; otherwise cells in women would have twice as many gene products from the X chromosome as cells from men).
You can see this visually because not the same X chromosome is deactivated in all cells: it's what gives calico cats their color (almost all of them are female).
You can see this visually because not the same X chromosome is deactivated in all cells: it's what gives calico cats their color (almost all of them are female).