Every single fruit you eat that has a name (e.g. "Fuji" apple or "Hass" avocado) has been grafted, and is a clone of the original plant, grafted on a rootstock

Every single fruit you eat that has a name (e.g. "Fuji" apple or "Hass" avocado) has been grafted, and is a clone of the original plant, grafted on a rootstock that may have other ideal properties.