Sprouts are a brassica - they are very closely related to cabbage and broccoli. Despite all the scaremongering about GM foods, sprouts are another example of a plant that has been genetically modified out of recognition to provide food. In fact, almost everything we eat has been modified out of recognition. Wheat doesn't look like grass, potatoes and tomatoes are gross monstrosities compared to the natural iem. Carrots are naturally purple but they were genetically modified to be orange in honour of the Dutch royal family (House of Orange).
We can't have sprouts I'm afraid as my wife is allergic to them. They make her itch and come out in spots. Shame.........!