The cruciferous vegetable family, also known as the Brassicaceae or Cruciferae family, originally hails from the Mediterranean and Central Asia and is a member of the mustard family, which includes plants such as mustards, radishes, and turnips. This family of plants is unique because it can cross-pollinate, meaning that different varieties of the same species can be bred to create new varieties.
— Read on geneticliteracyproject.org/2023/02/13/natural-crops-untouched-by-human-tinkering-broccoli-cabbage-cauliflower-and-brussels-sprouts-are-genetically-altered-variants-of-the-brassica-family/