👉 In biology, a progamospermous (or progamosperm) is a type of male gamete that originates from an organism's sperm. This means that it comes from the same cell as the sperm and has the same genetic material as the sperm itself. Progamosperms are often associated with plants, but they can also occur in other organisms such as insects or birds. Progamospermuses are characterized by having a single nucleus surrounded by two sets of nuclei, which are